Question

2/9 x 12/5=

5/7 : 4/21=

 

Answer 1

`a, 2/9 xx 12/5 = 8/15`

`b, 5/7 : 4/21 = 5/7 xx 21/4 = 15/4`

Answer 2

2/9 x 12/5=24/45 = 8/15

5/7 : 4/21= 5/7 x 21/4 = 105/28 = 15/4

 

Answer 3

\(\dfrac{2}{9}\times\dfrac{12}{5}=\dfrac{8}{15}\\ \dfrac{5}{7}:\dfrac{7}{21}=\dfrac{5}{7}.\dfrac{21}{7}=\dfrac{5}{7}.3=\dfrac{15}{7}\)