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6(-x+8)=-42
We move all terms to the left:
6(-x+8)-(-42)=0
We add all the numbers together, and all the variables
6(-1x+8)-(-42)=0
We add all the numbers together, and all the variables
6(-1x+8)+42=0
We multiply parentheses
-6x+48+42=0
We add all the numbers together, and all the variables
-6x+90=0
We move all terms containing x to the left, all other terms to the right
-6x=-90
x=-90/-6
x=+15
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