15=4(x-1)-(x-7)

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Solution for 15=4(x-1)-(x-7) equation: 



15=4(x-1)-(x-7)

We move all terms to the left:

15-(4(x-1)-(x-7))=0



We calculate terms in parentheses: -(4(x-1)-(x-7)), so:

4(x-1)-(x-7)

We multiply parentheses

4x-(x-7)-4

We get rid of parentheses

4x-x+7-4

We add all the numbers together, and all the variables

3x+3

Back to the equation:

-(3x+3)



We get rid of parentheses

-3x-3+15=0

We add all the numbers together, and all the variables

-3x+12=0

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

-3x=-12

x=-12/-3

x=+4

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