(7-4 3/4)*1 1/3+(6-4 2/5)/1 1/3
= 2 1/4 * 1 1/3 + 1 3/5 * 3/4 = 9/4 * 4/3 + 8/5 * 3/4 = 3 + 6/5 = 3 + 1 1/5 = 4 1/5
Решите задачу: