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39=x/4
We move all terms to the left:
39-(x/4)=0
We add all the numbers together, and all the variables
-(+x/4)+39=0
We get rid of parentheses
-x/4+39=0
We multiply all the terms by the denominator
-x+39*4=0
We add all the numbers together, and all the variables
-1x+156=0
We move all terms containing x to the left, all other terms to the right
-x=-156
x=-156/-1
x=+156
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