Ответ:
1) (31/9 - 37/21): 53/42 - 12/7 * 1/6= 106/63 : 53/42 - 12/7 * 1/6= 2/63 * 42 - 2/7 = 2/3 * 2 - 2/7 = 4/3 - 2/7 = 22/21 = (1 1/21)
2) (14/3 : 7/2 - 7/2 : 14/3):35/18 = (14/3* 2/7 - 7/2 * 3/14) * 18/35 = (2/3*2-1/2*3/2)*18/35 = (4/3-3/4)*18/35 = 7/12*18/35 = 1/2*3/5 = 3/10 = 0,3
Пошаговое объяснение:
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Answers & Comments
Ответ:
1) (31/9 - 37/21): 53/42 - 12/7 * 1/6= 106/63 : 53/42 - 12/7 * 1/6= 2/63 * 42 - 2/7 = 2/3 * 2 - 2/7 = 4/3 - 2/7 = 22/21 = (1 1/21)
2) (14/3 : 7/2 - 7/2 : 14/3):35/18 = (14/3* 2/7 - 7/2 * 3/14) * 18/35 = (2/3*2-1/2*3/2)*18/35 = (4/3-3/4)*18/35 = 7/12*18/35 = 1/2*3/5 = 3/10 = 0,3
Пошаговое объяснение: