3(-7s-7)=-7(3s+3)

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Solution for 3(-7s-7)=-7(3s+3) equation: 



3(-7s-7)=-7(3s+3)

We move all terms to the left:

3(-7s-7)-(-7(3s+3))=0

We multiply parentheses

-21s-(-7(3s+3))-21=0



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

-7(3s+3)

We multiply parentheses

-21s-21

Back to the equation:

-(-21s-21)



We get rid of parentheses

-21s+21s+21-21=0

We add all the numbers together, and all the variables

=0

s=0/1

s=0

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