-56=7x-21

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Solution for -56=7x-21 equation: 



-56=7x-21

We move all terms to the left:

-56-(7x-21)=0

We get rid of parentheses

-7x+21-56=0

We add all the numbers together, and all the variables

-7x-35=0

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

-7x=35

x=35/-7

x=-5

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