Выполните действия а)5/6-3/4 б)1/3+1/5 в)3/10+1/2 г)1/3-1/7 д)2/9+0 е)9/20+3/8 ж)19/75-11/50 з)13/50-17/75 и)11/14+8/21 к)7/15-0
216
359
Ответы на вопрос:
5/6 - 3/4 = (10 - 9) / 12 = 1/12 1/3 +1/5 = 5/15 + 3/15 = 8/15 3/10 + 1/2 = 3/10 + 5/10 = 8/10 = 4/5 1/3 - 1/7 = 7/21 - 3/21 = 4/21 2/9 + 0 = 2/9 9/20 + 3/8 = 18/40 + 15/40 = 33/40 19/75 - 11/50 = 38/150 - 33/150 = 5/150 = 1/30 11/14 + 18/21 = 33/42 + 36/42 = 69/42 = 1 27/42 = 1 9/14 7/15 - 0 = 7/15
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