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3(2+x)=128
We move all terms to the left:
3(2+x)-(128)=0
We add all the numbers together, and all the variables
3(x+2)-128=0
We multiply parentheses
3x+6-128=0
We add all the numbers together, and all the variables
3x-122=0
We move all terms containing x to the left, all other terms to the right
3x=122
x=122/3
x=40+2/3
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