Пошаговое объяснение:
3/4 : х = 1 1/5 : 1 1/3
3/4 : х = 6/5 : 4/3
6/5 * х = 4/3 * 3/4
6/5х = 12/12
6/5х = 1
х = 1 : 6/5
х = 1 * 5/6
х = 5/6
3 : 7,5 = 2,5 : х
3 * х = 7,5 * 2,5
3х = 18,75
х = 18,75 : 3
х = 6,25
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Пошаговое объяснение:
3/4 : х = 1 1/5 : 1 1/3
3/4 : х = 6/5 : 4/3
6/5 * х = 4/3 * 3/4
6/5х = 12/12
6/5х = 1
х = 1 : 6/5
х = 1 * 5/6
х = 5/6
3 : 7,5 = 2,5 : х
3 * х = 7,5 * 2,5
3х = 18,75
х = 18,75 : 3
х = 6,25