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8.2-(x-3.7)=15
We move all terms to the left:
8.2-(x-3.7)-(15)=0
We add all the numbers together, and all the variables
-(x-3.7)-6.8=0
We get rid of parentheses
-x+3.7-6.8=0
We add all the numbers together, and all the variables
-1x-3.1=0
We move all terms containing x to the left, all other terms to the right
-x=3.1
x=3.1/-1
x=-3+0.1/1
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