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10(12x+4)-2=138
We move all terms to the left:
10(12x+4)-2-(138)=0
We add all the numbers together, and all the variables
10(12x+4)-140=0
We multiply parentheses
120x+40-140=0
We add all the numbers together, and all the variables
120x-100=0
We move all terms containing x to the left, all other terms to the right
120x=100
x=100/120
x=5/6
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