\(=\dfrac{-1.6+5.3-1.2}{12}\\ =\dfrac{-6+15-2}{12}\\ =\dfrac{7}{12}\)
`-1/2 + 5/4 - 1/6`
`= -2/4 + 5/4-1/6`
`= 3/4 - 1/6`
`= 18/24 - 4/24`
`= 14/24= 7/12`
\(-\dfrac{1}{2}+\dfrac{5}{4}-\dfrac{1}{6}=\dfrac{3}{4}-\dfrac{1}{6}=\dfrac{7}{12}.\)
\(\dfrac{3}{4}-\dfrac{1}{6}=\dfrac{7}{12}\)