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120-x=x/2
We move all terms to the left:
120-x-(x/2)=0
We add all the numbers together, and all the variables
-x-(+x/2)+120=0
We add all the numbers together, and all the variables
-1x-(+x/2)+120=0
We get rid of parentheses
-1x-x/2+120=0
We multiply all the terms by the denominator
-1x*2-x+120*2=0
We add all the numbers together, and all the variables
-1x-1x*2+240=0
Wy multiply elements
-1x-2x+240=0
We add all the numbers together, and all the variables
-3x+240=0
We move all terms containing x to the left, all other terms to the right
-3x=-240
x=-240/-3
x=+80
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