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28=-w/9
We move all terms to the left:
28-(-w/9)=0
We get rid of parentheses
w/9+28=0
We multiply all the terms by the denominator
w+28*9=0
We add all the numbers together, and all the variables
w+252=0
We move all terms containing w to the left, all other terms to the right
w=-252
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