Đáp án:
`a,`
`1/12 + 2/3 + (-3)/4`
`= 3/4 + (-3)/4`
`= 0`
`b,`
`1 2/3 ÷ 1/6 + 1 1/4 × (1/2 - 1/5)`
`= 5/3 × 6 + 5/4 × 3/10`
`= 10 + 3/8`
`= 83/8`
`c,`
`-0,016 × \sqrt{1/16} × (-5)^3 × 2/(\sqrt{1/4})`
`= (-2)/125 × 1/4 × (-125) × 4`
`= (-1)/250 × (-500)`
`= 2`
`d,`
`(-1/2)^3 ÷ 1 3/8 - 25% × (-6 2/11)`
`= (-1)/8 ÷ 11/8 - 25% × (-68/11)`
`= (-1)/11 - (-17/11)`
`= (-1)/11 + 17/11`
`= 16/11`
