3(-6x-7)=-7(3x+6)

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Solution for 3(-6x-7)=-7(3x+6) equation: 



3(-6x-7)=-7(3x+6)

We move all terms to the left:

3(-6x-7)-(-7(3x+6))=0

We multiply parentheses

-18x-(-7(3x+6))-21=0



We calculate terms in parentheses: -(-7(3x+6)), so:

-7(3x+6)

We multiply parentheses

-21x-42

Back to the equation:

-(-21x-42)



We get rid of parentheses

-18x+21x+42-21=0

We add all the numbers together, and all the variables

3x+21=0

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

3x=-21

x=-21/3

x=-7

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