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125.4=0.045x+x
We move all terms to the left:
125.4-(0.045x+x)=0
We add all the numbers together, and all the variables
-(+1.045x)+125.4=0
We get rid of parentheses
-1.045x+125.4=0
We move all terms containing x to the left, all other terms to the right
-1.045x=-125.4
x=-125.4/-1.045
x=120+1.4210854715202E-14/1.045
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