đẹp gkeee:))

bạn tham khảo trên mạng nhé

\(\dfrac{4}{2}:\dfrac{3}{11}=\dfrac{4}{2}\times\dfrac{11}{3}=\dfrac{44}{6}=\dfrac{22}{3}\\ \dfrac{3}{5}+\dfrac{2}{7}=\dfrac{21}{35}+\dfrac{10}{35}=\dfrac{31}{35}\\ \dfrac{2}{3}\times\dfrac{3}{5}=\dfrac{2\times3}{3\times5}=\dfrac{6}{15}=\dfrac{2}{5}\\ \dfrac{7}{4}-\dfrac{3}{2}=\dfrac{7}{4}-\dfrac{6}{4}=\dfrac{1}{4}\)

This is my/mine brother

:)

= 200