tolong yaa pake caranya 1. (0,75:3/5) × 42% 2. 1,2 × 75% : 2 1/2

1. (0,75 : 3/5) x 42%
  = (75/100 : 3/5) x 42/100
  = (75/100 x 5/3) x 42/100
  = 0,525

2. 1,2 x 75% : 5/2
   = 12/10 x 75/100 x 2/5
   =0,36

1.0,75=3/4
3/4:3/5=15/20:12/20=20/15×12/20=12/15
2. 1,2×0,75=9,00:2,5=3,60