Помогите! 3 целых 2\7+ 5целая 3\4=? 7 целых 3\8+1целая 5\6=
3 2/7 + 5 3/4 = 23/7 + 23/4 =(23 × 4 + 23 × 7)/28 = 92/28 + 161/28 = 253/28 = 9 1/28 7 3/8 + 1 5/6 = 59/8 + 11/6 = (59 × 3 + 11 × 4)/24 = 177/24 + 44/24 = 221/24 = 9 5/24