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15-7(1-x)=3(x+8)
We move all terms to the left:
15-7(1-x)-(3(x+8))=0
We add all the numbers together, and all the variables
-7(-1x+1)-(3(x+8))+15=0
We multiply parentheses
7x-(3(x+8))-7+15=0
We calculate terms in parentheses: -(3(x+8)), so:We add all the numbers together, and all the variables
3(x+8)
We multiply parentheses
3x+24
Back to the equation:
-(3x+24)
7x-(3x+24)+8=0
We get rid of parentheses
7x-3x-24+8=0
We add all the numbers together, and all the variables
4x-16=0
We move all terms containing x to the left, all other terms to the right
4x=16
x=16/4
x=4
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