-w+-2w=-15

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Solution for -w+-2w=-15 equation: 



-w+-2w=-15

We move all terms to the left:

-w+-2w-(-15)=0

We add all the numbers together, and all the variables

-3w+15=0

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

-3w=-15

w=-15/-3

w=+5

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