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Published byEric French Modified over 9 years ago
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Solving Equations in Physics
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What??? This is physics not math Relax. Don’t freak out, its as easy as 1, 2, 3
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Do you remember PEMDAS? What is it? P E M D A S arenthases xponents ultiplication ivition ddition ubtraction However, the key to solving equations is to do these steps in reverse!
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So, what’s first? You need to break up the equation into its three steps.
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STEP 1 The first step will always be either adding or subtracting.
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STEP 2 The second step will always be either multiplying or dividing.
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STEP 3 The Third Step will always be either squaring or square rooting 2
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One more small detail When solving a math problem, the thing you are looking for, needs to be alone = 5 =
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Let’s try a problem. 7x + 5 = 54 This problem has addition, so we need to subtract first. - 5 Whatever we do on one side, we have to do on the other. 7x 49=
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Now, Step 2. 7x = 49 This problem has multiplication, so we need to divide now. Whatever we do on one side, we have to do on the other. 77 x = 7
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