Question

[goldfish1317]

13/5 : 9/4 + 5/2 
b) 16/6 - 13/6 : 8/7

Answer 1

[Hquynh]

\(a,\dfrac{13}{5}:\dfrac{9}{4}+\dfrac{5}{2}=\dfrac{13}{5}\times\dfrac{4}{9}+\dfrac{5}{2}=\dfrac{52}{45}+\dfrac{5}{2}=\dfrac{52\times2+5\times45}{90}=\dfrac{329}{90}\\ --------------\\ b,\dfrac{16}{6}-\dfrac{13}{6}:\dfrac{8}{7}=\dfrac{16}{6}-\dfrac{13}{6}\times\dfrac{7}{8}=\dfrac{16}{6}-\dfrac{91}{48}=\dfrac{16\times8-91}{48}=\dfrac{37}{48}\)

Answer 2

[Dora]

\(13/5:9/4+5/2\)

\(=13/5\times4/9+5/2\)

\(=52/45+5/2\)

\(=329/90\)

_________________________________

\(16/6-13/6:8/7\)

\(=16/6-13/6\times7/8\)

`=16/6-91/48`

`=37/48`