а) 2 x 3/7 x 7 = 6/7 x 7 = 6
б) 3 x (2/9 + 1 + 2/3) = 3 x (2/9 + 1 + 2/3) = 3 x (2/9 + 9/9 + 6/9) = 3 x 17/9 = 51/9 = 17/3 = 5 целых и 2/3
в) 5/12 x 2 3/7 + 5/12 x 3 4/7 = 5/12 x 17/7 + 5/12 x 24/7 = 85/84 + 120/84 = 205/84 = 2 целых и 37/84
а) 2 x 3/7 x 7 = 6/7 x 7 = 6
б) 3 x (2/9 + 1 + 2/3) = 3 x (2/9 + 1 + 2/3) = 3 x (2/9 + 9/9 + 6/9) = 3 x 17/9 = 51/9 = 17/3 = 5 целых и 2/3
в) 5/12 x 2 3/7 + 5/12 x 3 4/7 = 5/12 x 17/7 + 5/12 x 24/7 = 85/84 + 120/84 = 205/84 = 2 целых и 37/84