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8*x/2=-12
We move all terms to the left:
8*x/2-(-12)=0
We add all the numbers together, and all the variables
8*x/2+12=0
We multiply all the terms by the denominator
8*x+12*2=0
We add all the numbers together, and all the variables
8x+24=0
We move all terms containing x to the left, all other terms to the right
8x=-24
x=-24/8
x=-3
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