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138.20=4x+82.20
We move all terms to the left:
138.20-(4x+82.20)=0
We add all the numbers together, and all the variables
-(4x+82.2)+138.20=0
We add all the numbers together, and all the variables
-(4x+82.2)+138.2=0
We get rid of parentheses
-4x-82.2+138.2=0
We add all the numbers together, and all the variables
-4x+56=0
We move all terms containing x to the left, all other terms to the right
-4x=-56
x=-56/-4
x=+14
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