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-8+w/2=-20
We move all terms to the left:
-8+w/2-(-20)=0
We add all the numbers together, and all the variables
w/2+12=0
We multiply all the terms by the denominator
w+12*2=0
We add all the numbers together, and all the variables
w+24=0
We move all terms containing w to the left, all other terms to the right
w=-24
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