30-7w=-40

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Solution for 30-7w=-40 equation: 



30-7w=-40

We move all terms to the left:

30-7w-(-40)=0

We add all the numbers together, and all the variables

-7w+70=0

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

-7w=-70

w=-70/-7

w=+10

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