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7.1=-18.5+4x
We move all terms to the left:
7.1-(-18.5+4x)=0
We add all the numbers together, and all the variables
-(4x-18.5)+7.1=0
We get rid of parentheses
-4x+18.5+7.1=0
We add all the numbers together, and all the variables
-4x+25.6=0
We move all terms containing x to the left, all other terms to the right
-4x=-25.6
x=-25.6/-4
x=6+1/2.5
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