7n-8+4n=91

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Solution for 7n-8+4n=91 equation: 


n in (-oo:+oo)

7*n+4*n-8 = 91 // - 91

7*n+4*n-91-8 = 0

11*n-99 = 0 // + 99

11*n = 99 // : 11

n = 99/11

n = 9

n = 9

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