a) Use Euclid's Algorithm to show that there are integers s and t such that 21s + 97t = 1.

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(a) Use Euclid's Algorithm to show that there are integers s and t such that
21s + 97t = 1.
(b) Showing all your working, compute [21]-1 O [95] in Z97.
Transcribed Image Text:(a) Use Euclid's Algorithm to show that there are integers s and t such that 21s + 97t = 1. (b) Showing all your working, compute [21]-1 O [95] in Z97.
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