This is the simplest way to check that your answer is correct. If you solved for a variable or multiple variables, plug these solutions back into the equation and see if they make the equation true. If they do, then the solutions are correct. If the resulting equation isn’t true, then you know you’ve made a mistake in your calculations. For example, if you are working with the equation 4x=24+6x{\displaystyle 4x=24+6x}, and you find that x=12{\displaystyle x=12}, substitute 12 into the equation for x{\displaystyle x} to see if it makes the equation true:4(12)=24+6(12){\displaystyle 4(12)=24+6(12)}48=24+72{\displaystyle 48=24+72}48=96{\displaystyle 48=96}Since the equation isn’t true, you know that 12 isn’t the correct solution, and you need to go back and check your work. Look back through your work and make sure that you completed all of your calculations in the correct order. You can recall the acronym  PEMDAS to remember parentheses, exponents, multiplication, division, addition, and subtraction. For example, if you are solving the equation 3(2x+3)+14−2(42){\displaystyle 3(2x+3)+14-2(4^{2})} and you go back and see that your first step was to subtract 2 from 14, you know your answer is wrong, because you should have calculated the values in parentheses and exponents first, and then completed multiplication, before you did any adding and subtracting. A common error in algebra is making mistakes when working with positive and negative values. Go over your work again, and keep in mind the following rules about positive and negative signs:  Subtracting a negative number is the same as adding it.(3−(−7)=3+7=10{\displaystyle 3-(-7)=3+7=10})  Adding two negative numbers together results in a negative number. (−3+−7=−10{\displaystyle -3+-7=-10}) A negative time a negative equals a positive.(−3×−7=21{\displaystyle -3\times -7=21}) A negative times a positive equals a negative.(−3×7=−21{\displaystyle -3\times 7=-21})  The variable −x{\displaystyle -x} is not necessarily negative. The negative sign indicates that it is the opposite of whatever x{\displaystyle x} is. So, if x{\displaystyle x} is positive, −x{\displaystyle -x} is negative. If x{\displaystyle x} is negative, −x{\displaystyle -x} is positive. It helps to check your work with fresh eyes. If you have a problem that is giving you a lot of trouble, set it aside for a few hours, then come back to it later. On a separate sheet of paper, try reworking the problem without going over your original work. If possible, use a different method to solve this time. If your original solution and the new one match, you can be confident that your answer is correct. There are a number of calculators available online that allow you to type in your work, including variables, and calculate the solution. Most calculators also show you the steps needed in order to arrive at the solution. Some good sites for algebra calculators include Symbolab and Mathway. As when using a regular calculator, don’t use an algebra calculator to do your work for you. Do the problems first, then use the algebra calculator to check your solutions. If your answer is incorrect, go back and rework the problem; don’t just copy the solution from the calculator.

Summary: Plug the solution back into the equation. Double-check the order of operations. Double-check signs. Set the work aside. Use an algebra calculator.


It's the first option in the top-left of the blue menu bar at the top of Word. It's the last option at the bottom of the blue column on the left. This will open the main settings for Microsoft Word. Click the "Save" tab on the left-side column to open all the settings to customize how Word saves your documents in the pane on the right. "  When this option is turned off, fonts that are not on the computer will not be used in the document, which can reduce the file size of your Word document if you used uncommon fonts. It's at the bottom of the Save menu.  This will save your changes in Microsoft Word. When this option is disabled, use only the standard common fonts in your Word document so other users will not have problems viewing your document correctly.

Summary: Click File. Click Options. Click the Save tab on the left. Uncheck the box  for "Embed Fonts in the file. Click Ok.


If you are prone to blood clots, your doctor will order you anticoagulant medication, like warfarin, before you undergo surgery. An anticoagulant will help decrease your blood's ability to clot, and subsequently, help to decrease the risk of clotting that can occur during and after surgery.  Possible side effects of taking anticoagulants are increased bruising, prolonged nosebleeds, bleeding gums, vomiting or coughing up blood, and difficulty breathing. If you experience any of these side effects, report them to your doctor or nurse as soon as possible. You may need to continue the medication after surgery and when you go home as well. While sleeping and lying in bed, prop your legs up with 1 or 2 pillows. Elevating your legs will promote blood circulation, helping to decrease the risk of clotting. Alternatively, elevate the foot of your bed 4 to 6 inches (10 to 15 cm) off of the ground by stacking books or blocks underneath the legs of your bed. Your nurse will prompt you to get out of bed and walk around as soon as you are able to after surgery. Walk around the hospital’s hallways to prevent clot formation. If you are not able to walk around, then flex your ankles back and forth 10 to 20 times to promote blood circulation. Your nursing staff can help you if you struggle to walk alone.

Summary: Take anticoagulant medication before surgery. Elevate your legs after surgery. Walk around after surgery.


If the sleeping bag gets dirty, wash it in a front-loaded washing machine. Run it through the dryer until completely dry. If you have a synthetic sleeping bag, check the tag for special instructions before you do this.  Down sleeping bags get clumpy in the wash. To make them even and fluffy again, add a tennis ball to the dryer near the end of the cycle. Never wash a sleeping bag in a top-loaded machine. The agitator may tear the fabric. Never store a sleeping bag while it is wet or even a little damp. If the sleeping bag doesn't need a visit to the laundromat, just spread it out to dry instead. Some people turn the bag inside-out and hang it so that the inside airs out (that's often what gets smelly over time). Storing a sleeping bag in a stuff sack may compress the material permanently (he stuffing inside can separate along where it's folded and this makes it colder and less warm to sleep in). Let it expand between trips with one of the following storage methods:  Place it in an oversize, breathable storage bag made from cotton or nylon. Spread it out under the bed. Hang synthetic (but not down) sleeping bags on a large clothes hanger. If you're storing your sleeping bag in a damp room, place it in a bone-dry, airtight tub. Keep it away from areas with a known insect problem.
Summary: Wash the bag if necessary. Air out the sleeping bag after each trip. Leave it uncompressed during storage. Protect it from insects and water.