Question

 3/8:9/4:2=

21/15+3/5-4/5=

 

Answer 1

    \(\dfrac{3}{8}\) : \(\dfrac{9}{4}\) : 2

=  \(\dfrac{3}{8}\) x \(\dfrac{4}{9}\) x \(\dfrac{1}{2}\)

=  \(\dfrac{3\times4\times1}{4\times2\times3\times3\times2}\)

= \(\dfrac{1}{12}\)

Answer 2

3/8:9/4:2=3/8x4/9x2=24/72=1/3

21/15+3/5-4/5=7/5+3/5-4/5=6/5

Answer 3

   \(\dfrac{21}{15}\) + \(\dfrac{3}{5}\) - \(\dfrac{4}{5}\)

= \(\dfrac{7}{5}\)  + \(\dfrac{3}{5}\) - \(\dfrac{4}{5}\)

= \(\dfrac{7+3-4}{5}\)

= \(\dfrac{6}{5}\)

Answer 4

\(\dfrac{3}{8}:\dfrac{9}{4}:2=\dfrac{3}{8}\times\dfrac{4}{9}\times\dfrac{1}{2}=\dfrac{3\times4\times1}{8\times9\times2}=\dfrac{1}{12}\)

\(\dfrac{21}{15}+\dfrac{3}{5}-\dfrac{4}{5}=\dfrac{7}{5}+\dfrac{3}{5}-\dfrac{4}{5}=\dfrac{8}{5}\)