tolong yh pakai cara ny

1. 9/4 × 1/5 = 0.45 = 45/100
2. 31/4 × 3/5 = 4.65 = 465/1000
3.22/4 × 4/5 = 4.4 = 44/100
4. 19/5 × 5 = 19 Kira2 seperti itu Maaf jika salah Semoga bermanfaat

1. 2 1/4 × 1/5

= 9/4 × 1/5

= 9/20


2. 7 3/4 × 60%

= 31/4 × 60/100

= 31/4 × 6/10

= 31/4 × 3/5

=  93/20

= 4 13/20



3. 5 2/4 × 0,8

= 22/4 × 8/10

= 11/2 × 4/5

= 22/5

= 4 2/5


4. 3 4/5 × 5

= 19/5 × 5

=19




semoga membantu........