3/7=n/420

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Solution for 3/7=n/420 equation: 


n in (-oo:+oo)

3/7 = n/420 // - n/420

3/7-(n/420) = 0

3/7-1/420*n = 0 // - 3/7

-1/420*n = -3/7 // : -1/420

n = -3/7/(-1/420)

n = 180

n = 180

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