1 4/5*x=1 решите пж!!!!

Question

1 4/5*x=1 решите пж!!!!

Answer 1

1 целая 4/5 = (1*5+4)/5 = 9/5
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9/5 * х = 1
х = 1 : 9/5
х = 1 * 5/9
х = 5/9
Проверка: 9/5 * 5/9 = 45/45 = 1.