5. Вычислите разность. a) 7/8 - 3/4 = б) 9/10 - 2/5 = д) 7/12 - 8/15 = e) 25/39 - 15/26 =

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Accepted Answer

а) 7/8 - 3/4 = 7/8 - 6/8 = 1/8

б) 9/10 - 2/5 = 9/10 - 4/10 = 5/10

д) 7/12 - 8/15 = 35/60 - 32/60 = 3/60 = 1/20

е) 25/39 - 15/26 = 50/78 - 45/78 = 5/78