Найдите число х: 7/9:x=1/3+1/18 Срочно!!!!!
7/9 : х = 1/3 + 1/18
7/9 : х = 6/18 + 1/18
7/9 : х = 7/18
х = 7/9 : 7/18
х = 7/9 · 18/7
х = 18/9
х = 2
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Проверка:
7/9 : 2 = 1/3 + 1/18
7/9 · 1/2 = 6/18 + 1/18
7/18 = 7/18
7/9:x=1/3+1/18
7/9:x=6/18+1/18
7/9:x=7/18
x=7/9:7/18
x=7/9•18/7(сокращаем, 1/1 2/1)
x=2/1 иначе 2