Question

17/19 x 12/15 x 19/17          (5/7 + 9/7)x 21/18
                         4/5 x 13/14 + 13/14 x 1/5

 

Answer 1

a: \(=\dfrac{17}{19}\cdot\dfrac{19}{17}\cdot\dfrac{4}{5}=\dfrac{4}{5}\)

b: \(=\dfrac{14}{7}\cdot\dfrac{7}{6}=2\cdot\dfrac{7}{6}=\dfrac{14}{6}=\dfrac{7}{3}\)

c: =13/14(4/5+1/5)=13/14