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81=2.7x
We move all terms to the left:
81-(2.7x)=0
We add all the numbers together, and all the variables
-(+2.7x)+81=0
We get rid of parentheses
-2.7x+81=0
We move all terms containing x to the left, all other terms to the right
-2.7x=-81
x=-81/-2.7
x=29+1/1
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