x+77=2x-2

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Solution for x+77=2x-2 equation: 



x+77=2x-2

We move all terms to the left:

x+77-(2x-2)=0

We get rid of parentheses

x-2x+2+77=0

We add all the numbers together, and all the variables

-1x+79=0

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

-x=-79

x=-79/-1

x=+79

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