22/3-1 9/12+3 10/15

22/3-1 9/12+3 10/15 = 22/3-21/12+55/15= 440/60-105/60+220/60=555/60=9 ¼

22/3-1 9/12+3 10/15=440/60- 1 i 45/60+3 i 40/60=440/60- 105/60+220/60= 555/60=111/12=37/4=9,25