-6w+9=4w-21

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Solution for -6w+9=4w-21 equation: 



-6w+9=4w-21

We move all terms to the left:

-6w+9-(4w-21)=0

We get rid of parentheses

-6w-4w+21+9=0

We add all the numbers together, and all the variables

-10w+30=0

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

-10w=-30

w=-30/-10

w=+3

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