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43.5=9.1+x
We move all terms to the left:
43.5-(9.1+x)=0
We add all the numbers together, and all the variables
-(x+9.1)+43.5=0
We get rid of parentheses
-x-9.1+43.5=0
We add all the numbers together, and all the variables
-1x+34.4=0
We move all terms containing x to the left, all other terms to the right
-x=-34.4
x=-34.4/-1
x=34+0.4/1
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