Question

The solution of Linear congruence 7x ≡1 (mod 11) is?​

Answer 1

Answer:

so the solution is the volue of x=1/7

Answer 2

Answer:

1. 7n ≡ 1 (mod 19)

19 − 2 · 7 = 5

7 − 5 = 2

5 − 2 · 2 = 1

5 − 2 · (7 − 5) = 1

3 · 5 − 2 · 7 = 1

3 · (19 − 2 · 7) − 2 · 7 = 1

3 · 19 − 8 · 7 = 1

−8 · 7 = 1 (mod 19)

11 · 7 = 1 (mod 19)