w/3=21

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Solution for w/3=21 equation: 


w in (-oo:+oo)

w/3 = 21 // - 21

w/3-21 = 0

1/3*w-21 = 0 // + 21

1/3*w = 21 // : 1/3

w = 21/1/3

w = 63

w = 63

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