15=3(x-1)-(x-8)

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Solution for 15=3(x-1)-(x-8) equation:



15=3(x-1)-(x-8)
We move all terms to the left:
15-(3(x-1)-(x-8))=0
We calculate terms in parentheses: -(3(x-1)-(x-8)), so:
3(x-1)-(x-8)
We multiply parentheses
3x-(x-8)-3
We get rid of parentheses
3x-x+8-3
We add all the numbers together, and all the variables
2x+5
Back to the equation:
-(2x+5)
We get rid of parentheses
-2x-5+15=0
We add all the numbers together, and all the variables
-2x+10=0
We move all terms containing x to the left, all other terms to the right
-2x=-10
x=-10/-2
x=+5

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