`A-2/4+2/7-5/28`
`=-14/28+8/28-5/28`
`=(-14+8-5)/28`
`=-17/28`
A=\(\dfrac{-2}{4}+\dfrac{2}{7}-\dfrac{5}{28}=\dfrac{-14}{28}+\dfrac{8}{28}-\dfrac{5}{28}=\dfrac{6}{28}-\dfrac{5}{28}=\dfrac{1}{28}\)
`A-2/4+2/7-5/28` `=-14/28+8/28-5/28` `=(-14+8-5)/28` `=-11/28`
\(A=\dfrac{-2}{4}+\dfrac{2}{7}-\dfrac{5}{28}\)
\(A=\dfrac{-14}{28}+(\dfrac{8}{28}-\dfrac{5}{28})\)
\(A=\dfrac{-14}{28}+\dfrac{3}{28}\)
\(A=\dfrac{-11}{28}\)
A=\(\dfrac{-2}{4}+\dfrac{2}{7}-\dfrac{5}{28}\) =\(\dfrac{-14}{28}+\dfrac{8}{28}-\dfrac{5}{28}\) =\(\dfrac{-14+8-5}{28}\) =\(\dfrac{-11}{28}\)