24 4/5-19,5:7 2/9=24 4/5-19 5/10 :65/9=24 4/5-195/10*9/65=24 4/5-27/10=24 8/10-27/10=248/10-27/10=221/10=22 1/10
2 4/10 +5 6/10* (13 21/28-12 26/28)=2 4/10+ 5 6/10* (12 49/28-12 26/28)=
2 4/10+5 6/10*23/28= 2 4/10+56/10*23/28=2 4/10+46/10=2 4/10+ 4 6/10=9