Y/21=3 - solution

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Solution for Y/21=3 equation:

Y in (-oo:+oo)

Y/21 = 3 // - 3

Y/21-3 = 0

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

1/21*Y = 3 // : 1/21

Y = 3/1/21

Y = 63

Y = 63

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