1、 Recursive equation calculation, 8 and 1 / 5 + 3 / 5 × 7 / 6 + 3 / 10 1 / 4 × (5 / 6-1 / 12) × 3 / 8 7 / 10 × 3 / 5 + 2 / 5 △ 10 / 7

1、 Recursive equation calculation, 8 and 1 / 5 + 3 / 5 × 7 / 6 + 3 / 10 1 / 4 × (5 / 6-1 / 12) × 3 / 8 7 / 10 × 3 / 5 + 2 / 5 △ 10 / 7


8:1 + 5:3 × 6:7 + 10:3 = 8:1 + (7 / 10 + 3 / 10) = 8:1 + 1 = 9:14:1 × (5 / 6-12:1) △ 8:3 = 1 / 4 * (3 / 4 * 8 / 3) = 1 / 4 * 2 = 1 / 210:7 × 5:3 + 5:2 △ 7:10 = 7 / 10 * 3 / 5 + 2 / 5 * 7 / 10 = 7 / 10 *