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x-30=2x+120+1/2+15
We move all terms to the left:
x-30-(2x+120+1/2+15)=0
We add all the numbers together, and all the variables
x-(2x+1/2+135)-30=0
We get rid of parentheses
x-2x-135-30-1/2=0
We multiply all the terms by the denominator
x*2-2x*2-1-135*2-30*2=0
We add all the numbers together, and all the variables
x*2-2x*2-331=0
Wy multiply elements
2x-4x-331=0
We add all the numbers together, and all the variables
-2x-331=0
We move all terms containing x to the left, all other terms to the right
-2x=331
x=331/-2
x=-165+1/2
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