Question

Answer 1

\(=\dfrac{2.9}{3.4}-\dfrac{2}{9}\\ =\dfrac{18}{12}-\dfrac{2}{9}\\=\dfrac{18.9-2.12}{108}=\dfrac{23}{18}\)

Answer 2

\(\dfrac{2.9}{3.4}-\dfrac{2}{9}=\dfrac{18}{12}-\dfrac{2}{9}=\dfrac{3}{2}-\dfrac{2}{9}=\dfrac{27-4}{18}=\dfrac{23}{18}\)

Answer 3

`2/3 xx 9/4- 2/9`

`=(2xx9)/(3xx4)-2/9`

`=3/2-2/9`

`=27/18 - 4/18`

`=23/18`