4 целых 2/3×2-1/4+1целая3/5

4 2/3 * 2- 1/4 + 1 3/5=
14/3 * 2- 1/4 + 1 3/5=
28/3 - 1/4 + 1 3/5=
9 1/3 - 1/4 + 1 3/5=
9 20/60 - 15/60 + 1 36/60= 10 41/60

или

4 2/3 * 2- 1/4 + 1 3/5= 10 41/60

1) 4 2/3 * 2= 8 4/3= 9 1/3
2) 9 1/3 - 1/4= 9 4/12 - 3/12 = 9 1/12
3) 9 1/12 + 1 3/5= 9 5/60 + 1 36/60 = 10 41/60