(3 1/4+2 1/6):2 3/5-2/3:4/9 ​можно пж побыстрей

(3 1/4+2 1/6):2 3/5-2/3:4/9=(3 3/12+2 2/12):2 3/5-2/3*9/4= 3/5-2/1 3/4-65/12:13/5-1/1*3/2=65/12*5/13-1/1*3/2=5 5/12:2=5/12*5/1-3/2= 25/12-3/2=25/12-18/12=7/1 2