12x-40=-4x

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Solution for 12x-40=-4x equation: 



12x-40=-4x

We move all terms to the left:

12x-40-(-4x)=0

We get rid of parentheses

12x+4x-40=0

We add all the numbers together, and all the variables

16x-40=0

We move all terms containing x to the left, all other terms to the right

16x=40

x=40/16

x=2+1/2

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