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20x-51=11x-7
We move all terms to the left:
20x-51-(11x-7)=0
We get rid of parentheses
20x-11x+7-51=0
We add all the numbers together, and all the variables
9x-44=0
We move all terms containing x to the left, all other terms to the right
9x=44
x=44/9
x=4+8/9
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