21+-3w=-36

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Solution for 21+-3w=-36 equation: 



21+-3w=-36

We move all terms to the left:

21+-3w-(-36)=0

We add all the numbers together, and all the variables

-3w+57=0

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

-3w=-57

w=-57/-3

w=+19

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