6/5 : (1,6 : 2/5) jawaban....

6/5 ÷ (1,6÷2/5)
= 6/5÷ (16/10 × 5/2)
= 6/5 ÷ 80/20
= 6/5÷4
= 6/5×1/4
= 6/20
= 3/10

6/5:(1,6 : 2/5)
6/5:(8/5 x 5/2)
6/5:4
6/5:1/4
3/5:1/2
= 3/10

Semoga membantu :)