siapa yg bisa jawab..pliss besok di kumpul

2.a 2/7 : 4/5
= 2/7 x 5/4
=10/28
=5/14

B. 10/9 : 1 2/3
= 10/9 : 5/3
=10/9 x 3/5
= 30/45
=2/3

3.a. 5/14
b. 2/3
c. 6/25
d. 6/40 = 3/20