Question

tinh roi gach bo nhe ban 

12/35:36/25=??

Answer 1

\(\frac{12}{35}:\frac{36}{25}=\frac{12}{35}.\frac{25}{36}=\frac{12}{36}.\frac{25}{35}=\frac{1}{3}.\frac{5}{7}=\frac{5}{21}\)

Answer 2

\(\frac{12}{35}:\frac{36}{25}=\frac{5}{21}\)

mà gạch bỏ cái gì

Answer 3

\(\frac{12}{35}:\frac{36}{25}=\frac{12}{35}.\frac{25}{36}=\frac{12.25}{35.36}=\frac{2^2.3.5^2}{5.7.2^2.3^2}=\frac{\left(2^2.3.5\right).5}{\left(2^2.3.5\right).3.7}=\frac{5}{3.7}=\frac{5}{21}\)