21-6w=-9

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Solution for 21-6w=-9 equation: 



21-6w=-9

We move all terms to the left:

21-6w-(-9)=0

We add all the numbers together, and all the variables

-6w+30=0

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

-6w=-30

w=-30/-6

w=+5

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