Solution Found!
a. Find an inverse for 210 modulo 13.b. Find a positive
Chapter 8, Problem 31E(choose chapter or problem)
QUESTION:
Problem 31E
a. Find an inverse for 210 modulo 13.
b. Find a positive inverse for 210 modulo 13.
c. Find a positive solution for the congruence 210x ≡ 8 (mod 13).
Questions & Answers
QUESTION:
Problem 31E
a. Find an inverse for 210 modulo 13.
b. Find a positive inverse for 210 modulo 13.
c. Find a positive solution for the congruence 210x ≡ 8 (mod 13).
ANSWER:
Step 1 of 2
a. The inverse for 210 modulo 13 is 10, since 210 x 10 = 2100 = 1600 + 500 = 13 x 123 + 7 = 13 x 124 - 7 = 21(mod13).