4 - 2/3 × 2 - 1/4 + 1 3/5

4- 2/3*2-1/4+1 3/5=4-4/3-1/4+ 1 3/5=
= 4 - 16/12 - 3/12 +1 3/5= 4-13/12-1 3/5 = 4 - 65/60 - 1 36/60=
= 4 - 65/60  -96/60 = 4 - 161/60 = 4 - 2 41/60= 1 19/60