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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