7n-9=-72

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Solution for 7n-9=-72 equation: 


n in (-oo:+oo)

7*n-9 = -72 // + 72

7*n-9+72 = 0

7*n+63 = 0 // - 63

7*n = -63 // : 7

n = -63/7

n = -9

n = -9

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