1. \(\dfrac{1}{5}-\dfrac{1}{2}+\left|\dfrac{-1}{4}\right|=\dfrac{1}{5}-\dfrac{1}{2}+\dfrac{1}{4}=-\dfrac{1}{20}\)
2. \(\left|\dfrac{3}{-4}\right|+\dfrac{-1}{6}-\dfrac{5}{3}=\dfrac{3}{4}-\dfrac{1}{6}-\dfrac{5}{3}=-\dfrac{13}{12}\)
3. \(\dfrac{4}{7}-\dfrac{1}{14}+\left|\dfrac{-5}{21}\right|=\dfrac{4}{7}-\dfrac{1}{14}+\dfrac{5}{21}=\dfrac{31}{42}\)
`1) 1/5-1/2+|[-1]/4|=1/5-1/2+1/4=[-3]/10+1/4=[-1]/20`
`2)|3/[-4]|+[-1]/6-5/3=3/4+[-1]/6-5/3=7/12-5/3=[-13]/12`
`3)4/7-1/14+|[-5]/21|=4/7-1/14+5/21=1/2+5/21=31/42`
`1/5 - 1/2 + |-1/4| = 1/5 - 1/2 + 1/4 = -3/10 + 1/4 = -1/20`
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`|-3/4| + -1/6 - 5/3 = 3/4 + -1/6 - 5/3 = 7/12 - 5/3 = -13/12`
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`4/7 - 1/14 + |-5/21| = 1/2 + 5/21 = 31/42`
