-7x-20=57

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Solution for -7x-20=57 equation: 



-7x-20=57

We move all terms to the left:

-7x-20-(57)=0

We add all the numbers together, and all the variables

-7x-77=0

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

-7x=77

x=77/-7

x=-11

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