Ответы на вопрос:
1) 9 1/4 • 8 = 37/4 • 8/1 = 74 2) 1 2/3 • 5 1/2 = 5/3 • 11/2 = 55/6 = 9 1/6 3) 74 - 9 1/6 = 65 - 1/6 = 64 5/6 4) 4/5 • 2 11/12 = 4/5 • 35/12 = 7/3 = 2 1/3 5) 64 5/6 - 2 1/3 = 62 (5/6 - 2/6) = 62 3/6 = 62,5 ответ: 62,5
91/4*8 -1 2/3*5 1/2 - 4/5 * 2 11/12 = 62 1/2 или 62,5 1) 9 1/4*8 = 37/4*8 = 742) 1 2/3*5 1/2 = 5/3*11/2 = 55/6 = 9 1/63) 4/5*2 11/12 = 4/5*35/12 = 7/3 = 2 1/34) 74-9 1/6 = 74-55/6 = 444/6-55/6 = 389/6 = 64 5/65) 64 5/6-2 1/3 = 389/6-7/3 = 389/6-14/6 = 375/6 = 125/2 = 62 1/2 или 62,5
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