15=5(x+7)-7x

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Solution for 15=5(x+7)-7x equation: 



15=5(x+7)-7x

We move all terms to the left:

15-(5(x+7)-7x)=0



We calculate terms in parentheses: -(5(x+7)-7x), so:

5(x+7)-7x

We add all the numbers together, and all the variables

-7x+5(x+7)

We multiply parentheses

-7x+5x+35

We add all the numbers together, and all the variables

-2x+35

Back to the equation:

-(-2x+35)



We get rid of parentheses

2x-35+15=0

We add all the numbers together, and all the variables

2x-20=0

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

2x=20

x=20/2

x=10

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