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8x+70=2x-30
We move all terms to the left:
8x+70-(2x-30)=0
We get rid of parentheses
8x-2x+30+70=0
We add all the numbers together, and all the variables
6x+100=0
We move all terms containing x to the left, all other terms to the right
6x=-100
x=-100/6
x=-16+2/3
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