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10.2-8=x+3.1
We move all terms to the left:
10.2-8-(x+3.1)=0
We add all the numbers together, and all the variables
-(x+3.1)+2.2=0
We get rid of parentheses
-x-3.1+2.2=0
We add all the numbers together, and all the variables
-1x-0.9=0
We move all terms containing x to the left, all other terms to the right
-x=0.9
x=0.9/-1
x=-0.9/1
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