X=-40+2x

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Solution for X=-40+2x equation: 



X=-40+2X

We move all terms to the left:

X-(-40+2X)=0

We add all the numbers together, and all the variables

X-(2X-40)=0

We get rid of parentheses

X-2X+40=0

We add all the numbers together, and all the variables

-1X+40=0

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

-X=-40

X=-40/-1

X=+40

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