Question

tính : 9/11 :7/3 + 9/11 : 7/4

Answer 1

\(\dfrac{9}{11}:\dfrac{7}{3}+\dfrac{9}{11}:\dfrac{7}{4}=\dfrac{9}{11}\times\dfrac{3}{7}+\dfrac{9}{11}\times\dfrac{4}{7}=\dfrac{9}{11}\times\left(\dfrac{3}{7}+\dfrac{4}{7}\right)=\dfrac{9}{11}\times\dfrac{7}{7}=\dfrac{9}{11}\times1=\dfrac{9}{11}\)

Answer 2

9/11 : 7/3 + 9/11 : 7/4=9/11 x 3/7 + 9/11 x 4/7=9/11 x (3/7 + 4/7) =9/11 x 1= 9/11