a: =>1/x=14
hay x=1/14
b: \(\Leftrightarrow\dfrac{2x-\dfrac{5}{6}}{x}=\dfrac{2022}{2021}\cdot\dfrac{4042}{3033}=\dfrac{2}{3}\)
=>2x=6x-5/2
=>-4x=-5/2
hay x=5/8
`2/x + 3/x - 4/x = 14`
`<=> 1/x = 14`
`<=> x = 1/14`
`(2x-5/6): x = 2022/2021 : 3033/2042`
`(2x-5/6) : x = 4/3`
`<=> 2 - 5/(6x) = 4/3`
`<=> 5/(6x) = 2/3`
`<=> 12x = 15`
`<=> x = 5/4`