Ответ:
Пошаговое объяснение:
а) 5/7 > 2/7
б) 4/15 < 7/15
в) 1 > 16/33
г) 11/9 > 1
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а) 3/11 + 5/11 = 8/11
б) 9/14 - 7/14 = 2/14 = 1/7
в) 20/21 + 16/21 - 1 12/21 = 36/21 - 1 12/21 = 1 15/21 - 1 12/21 = 3/21 = 1/7
г) 4 - 1 5/9 + 2/9 = 3 9/9 - 1 5/9 + 2/9 = 2 6/9 = 2 2/3
д) 6 7/10 + 1 3/10 = 7 10/10 = 8
е) 3 1/8 - 1 7/8 = 2 9/8 - 1 7/8 = 1 2/8 = 1 1/4
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56 * 5/7 = 56 : 7 * 5 = 40 легковых
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Х : 9 = 3 5/9
х = 3 5/9 * 9
х = 32/9 * 9
х = 32