2) 3 5/8+2 7/16 4) 4 7/10+ 9 8/15 6) 6 3/10+5 11/12 - вопрос №53421102358271644710981566310511128513212 от Nactyxa2003 17.10.2020 04:22

Question

Математика: 2) 3 5/8+2 7/16 4) 4 7/10+ 9 8/15 6) 6 3/10+5 11/12 8) 5 1/3-2 1/2

Nactyxa2003 · Answer

3 5/8 + 2 7/16 = 29/8 + 39/16 =(29 × 2 + 39 × 1)/16 = 58/16 + 39/16 = 97/16 = 6 1/16
4 7/10 + 9 8/15 = 47/10 + 143/15 = (47 × 3 + 143 × 2)/30 = 141/30 + 286/30 = 427/30 = 14 7/30
6 3/10 + 5 11/12 = 63/10 + 71/12 = (63 × 6 + 71 × 5)/60 = 378/60 + 355/60 = 733/60 = 12 13/60
5 1/3 - 2 1/2 = 16/3 - 5/2 =(16 × 2 - 5 × 3)/6 = 32/6 - 15/6 = 17/6 = 2 5/6