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7x+82=4x-20+2x
We move all terms to the left:
7x+82-(4x-20+2x)=0
We add all the numbers together, and all the variables
7x-(6x-20)+82=0
We get rid of parentheses
7x-6x+20+82=0
We add all the numbers together, and all the variables
x+102=0
We move all terms containing x to the left, all other terms to the right
x=-102
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