$\color{#CCFF99}{\text{A}}$$\color{#99FF99}{\text{n}}$$\color{#33FF99}{\text{h}}$$\color{#00FF99}{\text{t}}$$\color{#99FFCC}{\text{h}}$$\color{#66FFCC}{\text{u}}$$\color{#00FF33}{\text{w}}$$\color{#00FFCC}{\text{7}}$$\color{#00FFFF}{\text{8}}$$\color{#33FFFF}{\text{7}}$$\color{#66FFFF}{\text{1}}$$\color{#99FFFF}{\text{4}}$$\color{#CCFFFF}{\text{9}}$

`_` `_` `_` `_` `_`

`x - 5/4` `+ x -` `7/3 = 4`

`=> (``x + x``) - (``5/4 + 7/3``) = 4`

`=>` `2x - (``15/12 + 28/12``) = 4`

`=>` `2x -` `43/12 = 4`

`=>` `2x =`` 4 + 43/12`

`=>` `2x = 91/12`

`=>`` x =` `91/12 : 2`

`=>` `x = 91/24`

Vậy `x = 91/24`