`\color{#1c1c1c}{\text{I}}^(\color{#363636}{\text{t}}^(\color{#4f4f4f}{\text{s}}^(\color{#696969}{\text{m}}^(\color{#828282}{\text{e}}^(\color{#9c9c9c}{\text{F}}^(\color{#b5b5b5}{\text{r}}^(\color{#cfcfcf}{\text{e}}^\color{#eee9e9}{\text{d}})))))))`

`3/2 x - 1 = 1/2 x + 3/5`

`3/2 x - 1/2 x = 3/5 + 1`

`x(3/2 - 1/2) = 3/5 + 5/5`

`x . 1 = 8/5`

`x = 8/5`

    Vậy: `x = 8/5`