Câu hỏi của Dorakiss

Question

3/10 / 2/5

4/7 / 3/11

Rang giup em le le nha anh chi!

Anime · Accepted Answer

$\frac{3}{10}:\frac{2}{5}=\frac{3}{10}x\frac{5}{2}=\frac{3x5}{10x2}=\frac{15}{20}=\frac{3}{4}$

$\frac{4}{7}:\frac{3}{11}=\frac{4}{7}x\frac{11}{3}=\frac{4x11}{7x3}=\frac{44}{21}$

Câu trả lời:

$\frac{3}{10}:\frac{2}{5}=\frac{3}{10}x\frac{5}{2}=\frac{3x5}{10x2}=\frac{15}{20}=\frac{3}{4}$

$\frac{4}{7}:\frac{3}{11}=\frac{4}{7}x\frac{11}{3}=\frac{4x11}{7x3}=\frac{44}{21}$