9 1/5-(5х-4 1/2):11 1/4=8 14/15

1. (5х-4 1/2):11 1/4=(5х-9/2):45/4=5х*4/45-9*4/2*45=4х/9-2/52. 9 1/5-4х/9+2/5=8 14/15   46/5=4х/9+2/5=134/1546/5+2/5-134/15=4х/948/5-134/15=4х/9144/15-134/15=4х/910/15=4х/92/3=4х/9х=2/3:4/9х=2*9/3*4х=3/2=1 1/2