5n+1=121-7n

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Solution for 5n+1=121-7n equation: 


n in (-oo:+oo)

5*n+1 = 121-(7*n) // - 121-(7*n)

5*n+7*n-121+1 = 0

12*n-120 = 0 // + 120

12*n = 120 // : 12

n = 120/12

n = 10

n = 10

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