Пошаговое объяснение:
1) -23/40 : (-6,9) = -23/40 : (-69/10) = -23/40 * (-10/69) = -1/4 * (-1/3) = 1/12
2) -11 2/5 * (-15/19) = -57/5 * (-15/19) = -3/1 * (-3/1) = 9/1 = 9
3) -3,5 : 1 3/4 = -35/10 : 7/4 = -35/10 * 4/7 = -5/5 * 2/1 = -10/5 = -2
4) 9 1/2 + 1/12 = 9 6/12 + 1/12 = 9 7/12
5) 9 7/12 + 9 = 18 7/12
6) 18 7/12 - (-2) = 18 7/12 + 2 = 20 7/12
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Answers & Comments
Пошаговое объяснение:
1) -23/40 : (-6,9) = -23/40 : (-69/10) = -23/40 * (-10/69) = -1/4 * (-1/3) = 1/12
2) -11 2/5 * (-15/19) = -57/5 * (-15/19) = -3/1 * (-3/1) = 9/1 = 9
3) -3,5 : 1 3/4 = -35/10 : 7/4 = -35/10 * 4/7 = -5/5 * 2/1 = -10/5 = -2
4) 9 1/2 + 1/12 = 9 6/12 + 1/12 = 9 7/12
5) 9 7/12 + 9 = 18 7/12
6) 18 7/12 - (-2) = 18 7/12 + 2 = 20 7/12