Question: Cs Math foundations: 5. Show that if a = b (mod m) and c = d (mod m), where a, b, c. d, and m

Cs Math foundations:

5. Show that if a = b (mod m) and c = d (mod m), where a, b, c. d, and m are integers with m _2, then a - c =b - d (mod m). 6. Calculate GCD (140, 60) and LCM (140, 60)

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