x+42=2x-36

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Solution for x+42=2x-36 equation: 



x+42=2x-36

We move all terms to the left:

x+42-(2x-36)=0

We get rid of parentheses

x-2x+36+42=0

We add all the numbers together, and all the variables

-1x+78=0

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

-x=-78

x=-78/-1

x=+78

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