-3(-7x+2)=57

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Solution for -3(-7x+2)=57 equation: 



-3(-7x+2)=57

We move all terms to the left:

-3(-7x+2)-(57)=0

We multiply parentheses

21x-6-57=0

We add all the numbers together, and all the variables

21x-63=0

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

21x=63

x=63/21

x=3

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