5x-7=x+77

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Solution for 5x-7=x+77 equation: 



5x-7=x+77

We move all terms to the left:

5x-7-(x+77)=0

We get rid of parentheses

5x-x-77-7=0

We add all the numbers together, and all the variables

4x-84=0

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

4x=84

x=84/4

x=21

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