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(-x/2)-3=-6
We move all terms to the left:
(-x/2)-3-(-6)=0
We add all the numbers together, and all the variables
(-x/2)+3=0
We get rid of parentheses
-x/2+3=0
We multiply all the terms by the denominator
-x+3*2=0
We add all the numbers together, and all the variables
-1x+6=0
We move all terms containing x to the left, all other terms to the right
-x=-6
x=-6/-1
x=+6
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