Ответ:1. -2 1/3 + 2 1/5 : (-15 1/7 + 4.8) = -7/3 + 11/5 : (-106/7 + 24/5)2. -7/3 + 11/5 : (-530/35 + 168/35) = -7/3 + 11/5 : (-362/35)3. -7/3 + 11/5 * (-35/362) = -7/3 - 77/362 = (-2534 - 231) / 1086 = -2765/1086 = -2 593/1086