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15.5x-12.2=13.1
We move all terms to the left:
15.5x-12.2-(13.1)=0
We add all the numbers together, and all the variables
15.5x-25.3=0
We move all terms containing x to the left, all other terms to the right
15.5x=25.3
x=25.3/15.5
x=1+2.5789473684211/4.0789473684211
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