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3(x-9)-4=-31
We move all terms to the left:
3(x-9)-4-(-31)=0
We add all the numbers together, and all the variables
3(x-9)+27=0
We multiply parentheses
3x-27+27=0
We add all the numbers together, and all the variables
3x=0
x=0/3
x=0
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