SOLUTION: how do i answer math problems with variables on both sides?? for example:4x+20=2x +12

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Question 153935This question is from textbook Skill builders Pre-algebra grades 5-8
: how do i answer math problems with variables on both sides?? for example:4x+20=2x +12

 This question is from textbook Skill builders Pre-algebra grades 5-8

Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
4x+20=2x +12
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You have to keep in mind that 4x and 2x are numbers.
You may add or subtract them just as you do other numbers.
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Subtract 2x from both sides to get:
2x + 20 = 12
Subtract 20 from both sides to get:
2x = -8
Divide both sides by 2 to get:
x = -4
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Cheers,
Stan H.