#1**+1 **

**The modular multiplicative inverse of an integer "a" modulo "m" is an integer "b" such that: ab ≡ 1 mod m If n = 1, a = 13^(-1) If n = 2, a = 85^(-1).........and so on. As a consequence of the above, no matter what the value of n, the multiplicative inverse of "a" will always be a 7. And as a result, 7a ≡ 1 mod 9.**

Guest Jan 6, 2019

#1**+1 **

Best Answer

**The modular multiplicative inverse of an integer "a" modulo "m" is an integer "b" such that: ab ≡ 1 mod m If n = 1, a = 13^(-1) If n = 2, a = 85^(-1).........and so on. As a consequence of the above, no matter what the value of n, the multiplicative inverse of "a" will always be a 7. And as a result, 7a ≡ 1 mod 9.**

Guest Jan 6, 2019