Jwb pren.​

3,5 : 3/4 + 3 3/5 x 2/3

= (7/2 : 3/4) + (18/5 x 2/3)

= (7/2 x 4/7) + (6/5 x 2/1)

= (1/1 x 2/1) + 12/5

= 2/1 + 12/5

= 10/5 + 12/5

= 22/5

= 4 2/5