Ответ:
Пошаговое объяснение:
5/9*2 4/7=5/9*18/7=10/7=1 3/7
4 2/3-1 3/7=4 14/21-1 9/21=3 5/21
2 1/7+1 2/3=2 3/21+1 14/21=
3 17/21
3 17/21:5=80/21*1/5=16/21
3 17/21:16/21=80/21*21/16=5
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Ответ:
Пошаговое объяснение:
5/9*2 4/7=5/9*18/7=10/7=1 3/7
4 2/3-1 3/7=4 14/21-1 9/21=3 5/21
2 1/7+1 2/3=2 3/21+1 14/21=
3 17/21
3 17/21:5=80/21*1/5=16/21
3 17/21:16/21=80/21*21/16=5