31=4w-9

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Solution for 31=4w-9 equation: 



31=4w-9

We move all terms to the left:

31-(4w-9)=0

We get rid of parentheses

-4w+9+31=0

We add all the numbers together, and all the variables

-4w+40=0

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

-4w=-40

w=-40/-4

w=+10

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