ответ: 1) = - 15/2 : (- 5/1) = 15/2 × 1/5 = 5/2 = 2 1/2
2) = - 42/5 : 7/1 = 42/5 × 1/7 = - 6/5 = -1 1/5
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ответ: 1) = - 15/2 : (- 5/1) = 15/2 × 1/5 = 5/2 = 2 1/2
2) = - 42/5 : 7/1 = 42/5 × 1/7 = - 6/5 = -1 1/5