(10-1 17/27÷22/45)÷4 4/9=

Спасибо огромное приогромное!!!

(10 - 1 17/27 : 22/45) : 4 4/9 = 1 1/21) 1 17/27 : 22/45 = 44/27 * 45/22 = (2*5)/(3*1) = 10/3 = 3 1/32) 10 - 3 1/3 = 9 3/3 - 3 1/3 = 6 2/33) 6 2/3 : 4 4/9 = 20/3 : 40/9 = 20/3 * 9/40 = (1*3)/(1*2) = 3/2 = 1 1/2