Ответ:
1 1/3
Пошаговое объяснение:
1) 1 2/7 * 5 4/9 = 9/7 * 49/9 = 1/1 * 7/1 = 7/1 = 7
2) 3 2/3 - 7 = 3 2/3 - 6 3/3 = -3 1/3
3) -3 1/3 : (-2,5) = -10/3 : (-25/10) = -10/3 * (-10/25) = -2/3 * (-10/5) = 20/15 = 4/3 = 1 1/3
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Answers & Comments
Ответ:
1 1/3
Пошаговое объяснение:
1) 1 2/7 * 5 4/9 = 9/7 * 49/9 = 1/1 * 7/1 = 7/1 = 7
2) 3 2/3 - 7 = 3 2/3 - 6 3/3 = -3 1/3
3) -3 1/3 : (-2,5) = -10/3 : (-25/10) = -10/3 * (-10/25) = -2/3 * (-10/5) = 20/15 = 4/3 = 1 1/3