31=7-3w

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Solution for 31=7-3w equation: 



31=7-3w

We move all terms to the left:

31-(7-3w)=0

We add all the numbers together, and all the variables

-(-3w+7)+31=0

We get rid of parentheses

3w-7+31=0

We add all the numbers together, and all the variables

3w+24=0

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

3w=-24

w=-24/3

w=-8

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