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85x-30=43x+7
We move all terms to the left:
85x-30-(43x+7)=0
We get rid of parentheses
85x-43x-7-30=0
We add all the numbers together, and all the variables
42x-37=0
We move all terms containing x to the left, all other terms to the right
42x=37
x=37/42
x=37/42
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