-7x-7(-7x+3)=231

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Solution for -7x-7(-7x+3)=231 equation: 



-7x-7(-7x+3)=231

We move all terms to the left:

-7x-7(-7x+3)-(231)=0

We multiply parentheses

-7x+49x-21-231=0

We add all the numbers together, and all the variables

42x-252=0

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

42x=252

x=252/42

x=6

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