Вычислите (7/9 - 1/6):2/9•21/22

Question

Вычислите (7/9 - 1/6):2/9•21/22

Answer 1

(7/9 - 1/6) : 2/9 * 21/22 = 2 5/8,
1) 7/9 - 1/6 = 14/18 - 3/18 = 11/18,
2) 11/18 : 2/9 = 11/18 * 9/2 = 11/4 = 2 3/4,
3) 2 3/4 * 21/22 = 11/4 * 21/22 = 21/8 = 2 5/8