9w+21=3(w+3)

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



9w+21=3(w+3)

We move all terms to the left:

9w+21-(3(w+3))=0



We calculate terms in parentheses: -(3(w+3)), so:

3(w+3)

We multiply parentheses

3w+9

Back to the equation:

-(3w+9)



We get rid of parentheses

9w-3w-9+21=0

We add all the numbers together, and all the variables

6w+12=0

We move all terms containing w to the left, all other terms to the right

6w=-12

w=-12/6

w=-2

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