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63=9(w+9)
We move all terms to the left:
63-(9(w+9))=0
We calculate terms in parentheses: -(9(w+9)), so:We get rid of parentheses
9(w+9)
We multiply parentheses
9w+81
Back to the equation:
-(9w+81)
-9w-81+63=0
We add all the numbers together, and all the variables
-9w-18=0
We move all terms containing w to the left, all other terms to the right
-9w=18
w=18/-9
w=-2
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