13=4x+7(-2x+9)

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Solution for 13=4x+7(-2x+9) equation: 



13=4x+7(-2x+9)

We move all terms to the left:

13-(4x+7(-2x+9))=0



We calculate terms in parentheses: -(4x+7(-2x+9)), so:

4x+7(-2x+9)

We multiply parentheses

4x-14x+63

We add all the numbers together, and all the variables

-10x+63

Back to the equation:

-(-10x+63)



We get rid of parentheses

10x-63+13=0

We add all the numbers together, and all the variables

10x-50=0

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

10x=50

x=50/10

x=5

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