Question

4.5/7
22/23.9/11
-9/7.7/15

Answer 1

`4 . 5/7`

`=20/7`

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`22/23 . 9/11`

`= 22.9/23.11`

`= 2.9/23.1`

`= 18/23`

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`-9/7 . 7/15`

`= -9/15`

`= - 3/5`

Answer 2

\(a,4.\dfrac{5}{7}=\dfrac{4.5}{7}=\dfrac{20}{7}\)

\(b,\dfrac{22}{23}.\dfrac{9}{11}=\dfrac{22.9}{23.11}=\dfrac{198}{253}=\dfrac{18}{23}\)

\(c,\dfrac{-9}{7}.\dfrac{7}{15}=\dfrac{-9.7}{7.15}=\dfrac{-63}{105}=\dfrac{-3}{5}\)