13-5x=3(-x+7)

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Solution for 13-5x=3(-x+7) equation: 



13-5x=3(-x+7)

We move all terms to the left:

13-5x-(3(-x+7))=0

We add all the numbers together, and all the variables

-5x-(3(-1x+7))+13=0



We calculate terms in parentheses: -(3(-1x+7)), so:

3(-1x+7)

We multiply parentheses

-3x+21

Back to the equation:

-(-3x+21)



We get rid of parentheses

-5x+3x-21+13=0

We add all the numbers together, and all the variables

-2x-8=0

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

-2x=8

x=8/-2

x=-4

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