sulamita1512

Verified answer

1) 18 1/4 - 17 5/6 = 17 5/4 - 17 5/6 = 15/12 - 10/12= 5/12 
2) 5/12 *8 2/5 = 5/12 *42/5 = 42:12 = 3,5
3) 3,5 + 5,5 =9