-3w-21=9(w-9)

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Solution for -3w-21=9(w-9) equation:



-3w-21=9(w-9)
We move all terms to the left:
-3w-21-(9(w-9))=0
We calculate terms in parentheses: -(9(w-9)), so:
9(w-9)
We multiply parentheses
9w-81
Back to the equation:
-(9w-81)
We get rid of parentheses
-3w-9w+81-21=0
We add all the numbers together, and all the variables
-12w+60=0
We move all terms containing w to the left, all other terms to the right
-12w=-60
w=-60/-12
w=+5

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