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6x+42+3x-86=2x+36+5x+54
We move all terms to the left:
6x+42+3x-86-(2x+36+5x+54)=0
We add all the numbers together, and all the variables
6x+3x-(7x+90)+42-86=0
We add all the numbers together, and all the variables
9x-(7x+90)-44=0
We get rid of parentheses
9x-7x-90-44=0
We add all the numbers together, and all the variables
2x-134=0
We move all terms containing x to the left, all other terms to the right
2x=134
x=134/2
x=67
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