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81x+66=31x+44
We move all terms to the left:
81x+66-(31x+44)=0
We get rid of parentheses
81x-31x-44+66=0
We add all the numbers together, and all the variables
50x+22=0
We move all terms containing x to the left, all other terms to the right
50x=-22
x=-22/50
x=-11/25
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