Пошаговое объяснение:
1.
1) 62/8 + 2 4/8 + 5/8 =
2 71/8 = 87/8
2) 87/8 * 6 = 522/8 = 65 2/8 = 65 1/4 = 65,25
2.
1) 6 5/12 - 8/12 + 1/12 =
77/12 - 8/12 + 1/12 = 70/12 = 35/6
2) 35/6 * 3/4 = 35/2 * 1/4 = 35/8 = 4 3/8 = 4,375
Пошаговое объяснение:
1.
1) 62/8 + 2 4/8 + 5/8 =
2 71/8 = 87/8
2) 87/8 * 6 = 522/8 = 65 2/8 = 65 1/4 = 65,25
2.
1) 6 5/12 - 8/12 + 1/12 =
77/12 - 8/12 + 1/12 = 70/12 = 35/6
2) 35/6 * 3/4 = 35/2 * 1/4 = 35/8 = 4 3/8 = 4,375