-9=5/7n

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Solution for -9=5/7n equation: 


n in (-oo:+oo)

-9 = (5/7)*n // - (5/7)*n

-((5/7)*n)-9 = 0

(-5/7)*n-9 = 0

-5/7*n-9 = 0 // + 9

-5/7*n = 9 // : -5/7

n = 9/(-5/7)

n = -63/5

n = -63/5

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