Đáp án:
a)
`\frac{1}{2} - (\frac{1}{3} + \frac{1}{10})`
`= \frac{1}{2} - \frac{1}{3} - \frac{1}{10}`
`= \frac{1}{6} - \frac{1}{10}`
`= \frac{1}{15}`
b)
`\frac{1}{12} - (\frac{-1}{6} - \frac{1}{4})`
`= \frac{1}{12} + \frac{1}{6} + \frac{1}{4}`
`= \frac{1}{4} + \frac{1}{4}`
`= \frac{1}{2}`
c)
`\frac{1}{2} - \frac{-1}{3} + \frac{1}{23} + \frac{1}{6}`
`= \frac{1}{2} + \frac{1}{3} + \frac{1}{23} + \frac{1}{6}`
`= \frac{5}{6} + \frac{1}{23} + \frac{1}{6}`
`= \frac{5}{6} + \frac{1}{6} + \frac{1}{23}`
`= 1 + \frac{1}{23}`
`= 1\frac{1}{23}`
Chúc học tốt!!!
