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`5/3 xx 7/4 + 5/3 xx 5/4`
`=5/3 xx (7/4 + 5/4)`
`=5/3 xx 12/4
`=5/3 xx 3`
`=5`
\(\dfrac{2}{3}+\dfrac{4}{5}\times\dfrac{5}{6}=\dfrac{2}{3}+\dfrac{2}{3}=\dfrac{4}{3}\)
`5/3 + 1/5 : 3/4`
`= 5/3 + 1/5 xx 4/3`
`= 5/3 + 4/15`
`= 25/15 +4/15`
`= 29/15`
5/3 + 1/5 : 3/4
= 5/3 + 1/5 x 4/3
= 5/3 + 4/15
= 25/15 + 4/15
=29/15
\(\dfrac{2}{3}\times\left(\dfrac{4}{10}+\dfrac{1}{5}\right)=\dfrac{2}{3}\times\left(\dfrac{4}{10}+\dfrac{2}{10}\right)=\dfrac{2}{3}\times\dfrac{6}{10}=\dfrac{2}{3}\times\dfrac{3}{5}=\dfrac{6}{15}=\dfrac{2}{5}\)
\(=\dfrac{2}{3}\times\left(\dfrac{4}{10}+\dfrac{1}{5}\right)\\ =\dfrac{2}{3}\times\dfrac{3}{5}=\dfrac{2}{5}\)
\(\dfrac{1}{3}\times\dfrac{1}{4}\times\dfrac{1}{5}=\dfrac{1}{60}\)
\(x=\dfrac{4}{7}:\dfrac{3}{5}=\dfrac{4\times5}{7\times3}=\dfrac{20}{21}\)
\(=\left(\dfrac{3}{4}+\dfrac{1}{4}\right)+\left(\dfrac{2}{5}+\dfrac{3}{5}\right)=1+1=2\)
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