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-w/2=-4
We move all terms to the left:
-w/2-(-4)=0
We add all the numbers together, and all the variables
-w/2+4=0
We multiply all the terms by the denominator
-w+4*2=0
We add all the numbers together, and all the variables
-1w+8=0
We move all terms containing w to the left, all other terms to the right
-w=-8
w=-8/-1
w=+8
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