n/7=15/21

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Solution for n/7=15/21 equation: 


n in (-oo:+oo)

n/7 = 15/21 // - 15/21

n/7-(15/21) = 0

n/7-5/7 = 0

1/7*n-5/7 = 0 // + 5/7

1/7*n = 5/7 // : 1/7

n = 5/7/1/7

n = 5

n = 5

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