Ответы и объяснения

2014-02-02T19:23:57+04:00
4 3/8 +3 7/8 -1 3/7 = 35/8 + 31/8 - 10/7 = 245/56 + 217/56 - 80/56 = 382/56 = 6 46/56 =
= 6 23/28