Question

tính bằng cách thuận tiện nhất:

7/11 : 3/5 + 4/11 : 3/5

 

Answer 1

7/11 : 3/5 + 4/11 : 3/5

= (7/11 + 4/11) : 3/5

=1:3/5=5/3

Answer 2

\(\left(\dfrac{7}{11}+\dfrac{4}{11}\right):\dfrac{3}{5}=\dfrac{11}{11}:\dfrac{3}{5}=\dfrac{1}{1}:\dfrac{3}{5}=\dfrac{1}{1}\times\dfrac{5}{3}=\dfrac{5}{3}\)

Answer 3

= (7/11 + 4/11) : 3/5

=1:3/5=5/3