70+80=80+x

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Solution for 70+80=80+x equation: 



70+80=80+x

We move all terms to the left:

70+80-(80+x)=0

We add all the numbers together, and all the variables

-(x+80)+70+80=0

We add all the numbers together, and all the variables

-(x+80)+150=0

We get rid of parentheses

-x-80+150=0

We add all the numbers together, and all the variables

-1x+70=0

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

-x=-70

x=-70/-1

x=+70

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