Ответы на вопрос:
1) 1 31/33 • 1,5 = 64/33 • 3/2 = 32/11 = 2 10/11 2) 78 1/11 + 2 10/11 = 80 11/11 = 81 3) 81 - 78 20/21 = 80 21/21 - 78 20/21 = 2 1/21 4) 2 1/21 : 2 1/21 = 1 5) 98 17/87 - 2 25/29 - 1 = 98 17/87 - 1 25/29 = 98 17/87 - 1 75/87 = 97 104/87 - 1 75/87 = 96 29/87 = 96 1/3 ответ 96 1/3
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