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-12.8=x/8
We move all terms to the left:
-12.8-(x/8)=0
We add all the numbers together, and all the variables
-(+x/8)-12.8=0
We get rid of parentheses
-x/8-12.8=0
We multiply all the terms by the denominator
-x-(12.8)*8=0
We add all the numbers together, and all the variables
-1x-102.4=0
We move all terms containing x to the left, all other terms to the right
-x=102.4
x=102.4/-1
x=-102+0.40000000000001/1
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