Question

[Sách Giáo Khoa]

Điền số thích hợp vào chỗ trống :

a) \(\dfrac{3}{4}=\dfrac{....}{20}\)

b) \(\dfrac{4}{5}=\dfrac{12}{....}\)

c) \(\dfrac{....}{9}=\dfrac{-16}{36}\)

d) \(\dfrac{7}{....}=\dfrac{21}{-39}\)

Answer 1

[Bùi Thu Hằng]

a) \(\dfrac{3}{4}=\dfrac{15}{20}\)

b) \(\dfrac{4}{5}=\dfrac{12}{15}\)

c) \(\dfrac{-4}{9}=\dfrac{-16}{36}\)

d) \(\dfrac{7}{-13}=\dfrac{21}{-39}\)

Answer 2

[Bích Ngọc Huỳnh]

a ) \(\dfrac{3}{4}\)= \(\dfrac{15}{20}\)

b )\(\dfrac{4}{5}\)= \(\dfrac{12}{15}\)

c) \(\dfrac{-4}{9}\)=\(\dfrac{-16}{36}\)

d) \(\dfrac{7}{-13}\)=\(\dfrac{21}{-39}\)