(5/7 - 2/3):(4/9 - 5/12)

Question

(5/7 - 2/3):(4/9 - 5/12)

Answer 1

(5/7 - 2/3):(4/9 - 5/12)=(15/21-14/21):(16/36-15/36)=1/21:1/36=1/21×36/1=12/7

Comments

Спасибо огромное!