13+8=-3(3x-7)

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Solution for 13+8=-3(3x-7) equation: 



13+8=-3(3x-7)

We move all terms to the left:

13+8-(-3(3x-7))=0

We add all the numbers together, and all the variables

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



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

-3(3x-7)

We multiply parentheses

-9x+21

Back to the equation:

-(-9x+21)



We get rid of parentheses

9x-21+21=0

We add all the numbers together, and all the variables

9x=0

x=0/9

x=0

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