21/28-6/14÷9/25 tolong pake cara ya

= 21/28 - 6/14 ÷ 9/25
= 21/28 - 12/28 ÷ 9/25
= 9/28 ÷ 9/25
= 9/28 × 25/9
= 1/28 × 25/1
= 25/28

Jadi jawabannya adalah 25/28

Semoga membantu ^-^

21/28 - 6/14 : 9/25
= 21/28 -(6/14 x 25/9)
= 21/28 -(50/42 ;25/21 ;1 4/21)
= 21/28-1 4/21
= 63/84 -1 16/84
=1 63-16/84
= 1 47/84

maaf kalo salah >_<