2/3=n/21 - solution

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Solution for 2/3=n/21 equation:

n in (-oo:+oo)

2/3 = n/21 // - n/21

2/3-(n/21) = 0

2/3-1/21*n = 0 // - 2/3

-1/21*n = -2/3 // : -1/21

n = -2/3/(-1/21)

n = 14

n = 14

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