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13x+81=65+10x
We move all terms to the left:
13x+81-(65+10x)=0
We add all the numbers together, and all the variables
13x-(10x+65)+81=0
We get rid of parentheses
13x-10x-65+81=0
We add all the numbers together, and all the variables
3x+16=0
We move all terms containing x to the left, all other terms to the right
3x=-16
x=-16/3
x=-5+1/3
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