=>1/4:(x-2/3)=2
=>(x-2/3)=1/8
=>x=1/8+2/3=3/24+16/24=19/24
13/4 - 1/4 : ( x - 2/3 )= 5/4
\(\Rightarrow\) 1/4 : ( x- 2/3 ) = 13/4 - 5/4
\(\Rightarrow\) 1/4 : ( x- 2/3)= 2
\(\Rightarrow\) x - 2/3 = 1/4 :2
\(\Rightarrow\) x- 2/3 = 1/8
\(\Rightarrow\) x= 1/8 +2/3 =19/24
Vậy x = 19/24
\(\dfrac{13}{4}-\dfrac{1}{4}\div\left(x-\dfrac{2}{3}\right)=\dfrac{5}{4}\\ \Rightarrow\dfrac{1}{4}\div\left(x-\dfrac{2}{3}\right)=\dfrac{13}{4}-\dfrac{5}{4}\\ \Rightarrow\dfrac{1}{4}\div\left(x-\dfrac{2}{3}\right)=\dfrac{8}{4}=2\\ \Rightarrow x-\dfrac{2}{3}=\dfrac{1}{4}\div2\\ \Rightarrow x-\dfrac{2}{3}=\dfrac{1}{4}\times\dfrac{1}{2}\\ \Rightarrow x-\dfrac{2}{3}=\dfrac{1}{8}\\ \Rightarrow x-\dfrac{16}{24}=\dfrac{3}{24}\\ \Rightarrow x=\dfrac{3}{24}+\dfrac{16}{24}\\ \Rightarrow x=\dfrac{19}{24}\)
Vậy \(x=\dfrac{19}{24}\)
` @ \color{Red}{m}`
` \color{blue}{Answer}`
`13/4 -1/4 : (x-2/3) =5/4`
`=> 1/4 : (x-2/3) = 13/4 -5/4`
`=> 1/4 : ( x-2/3)= 8/4`
`=> x-2/3= 1/4 :2`
`=> x-2/3=1/4 xx 1/2`
`=> x -2/3= 1/8`
`=> x= 1/8 +2/3`
`=> x= 3/24 + 16/24`
`=> x= 19/24`
Vậy `x=19/24`
