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8=12.100+x
We move all terms to the left:
8-(12.100+x)=0
We add all the numbers together, and all the variables
-(x+12.1)+8=0
We get rid of parentheses
-x-12.1+8=0
We add all the numbers together, and all the variables
-1x-4.1=0
We move all terms containing x to the left, all other terms to the right
-x=4.1
x=4.1/-1
x=-4+0.1/1
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