21+3w=84

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Solution for 21+3w=84 equation: 



21+3w=84

We move all terms to the left:

21+3w-(84)=0

We add all the numbers together, and all the variables

3w-63=0

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

3w=63

w=63/3

w=21

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