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11x+15=81+8=11
We move all terms to the left:
11x+15-(81+8)=0
We add all the numbers together, and all the variables
11x+15-89=0
We add all the numbers together, and all the variables
11x-74=0
We move all terms containing x to the left, all other terms to the right
11x=74
x=74/11
x=6+8/11
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