4 1/3÷(5/6+0.25)/(7/12-2/15)÷0.9-3.6×(7/12+1/9)/(5/8-1/3)×15/7

Question

4 1/3÷(5/6+0.25)/(7/12-2/15)÷0.9-3.6×(7/12+1/9)/(5/8-1/3)×15/7

Answer 1

(7/12-2/15):0,9=56-20/120:0,9=36/120:0,9=3/10:9/10=3/10×10/9=3