7/3=n/21

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Solution for 7/3=n/21 equation: 


n in (-oo:+oo)

7/3 = n/21 // - n/21

7/3-(n/21) = 0

7/3-1/21*n = 0 // - 7/3

-1/21*n = -7/3 // : -1/21

n = -7/3/(-1/21)

n = 49

n = 49

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