1) 2 3/5 - 2 2/3 = 2 9/15 - 2 10/15 = -1/15
2) -1/15 : 3 2/3 = -1/15 : 11/3 = -1/15 * 3/11 = -1/55
3) -1/55 - 4/11 = -1/55 - 20/55 = -21/55
ответ: -21/55
Решение внизу на фото
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1) 2 3/5 - 2 2/3 = 2 9/15 - 2 10/15 = -1/15
2) -1/15 : 3 2/3 = -1/15 : 11/3 = -1/15 * 3/11 = -1/55
3) -1/55 - 4/11 = -1/55 - 20/55 = -21/55
ответ: -21/55
Решение внизу на фото