solve-30x-50-mod-40-

Question Number 190 by 123456 last updated on 25/Jan/15

solve 30 x \equiv 50 (\mod 40)

Answered by mreddy last updated on 15/Dec/14

30 x + 40 y = 50

3 x + 4 y = 5

general solution

x = 3 + 4 k or

x = 3, 7, 11, 15, 19, 23, 27, 31, 35, 39 (m o d 40)

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