(х + 2 целых 3/7): 3 целых 2/7=4/5. Created by andreiandreich. matematika-ru

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Х+2целых3/7=4/5×3 целых 2/7Х+2целых3/7=2целых 22/35Х=2целых22/35-2целых 3/7Х=1/5Ответ1/5

4 votes Thanks 14

danakuzhamratova (х + 2 3/7) : 3 2/7 = 4/5
х + 2 3/7 = 4/5 * 3 2/7 = 4/5 * 23/7 = 92/35 = 2 22/35
х = 2 22/35 - 2 3/7 = 2 22/35 - 2 15/35 = 7/35 = 1/5
х = 1/5

(у - 2/15) : 1 5/6 = 2 1/5
у - 2/15 = 2 1/5 * 1 5/6 = 11/5 * 11/6 = 121/30 = 4 1/30
у = 4 1/30 + 2/15 = 4 1/30 + 4/30 = 4 5/30 = 4 1/6
у = 4 1/6

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(х+2 3/7):3 2/7=4/5
х+2 3/7=4/5*2 3/7
х+2 3/7=92/35
х=92/35-2 3/7 приводим к общему знаменателю и получаем...
х=1/5
Все!

3 votes Thanks 14

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