`{2x-1}/3 = {x+1}/2`
$\Leftrightarrow$ `{2x-1}/3 = {2 . (x+1)}/{2.2}`
$\Leftrightarrow$ `{2x-1}/3 = {2x + 2}/4`
$\Leftrightarrow$ `4 . (2x - 1) = 3 . (2x + 2)`
$\Leftrightarrow$ `8x - 4 = 6x + 6`
$\Leftrightarrow$ `8x - 6x = 6 + 4`
$\Leftrightarrow$ `2x = 10`
$\Leftrightarrow$ `x = 10 : 2`
$\Leftrightarrow$ `x = 5`
$\text{Vậy}$ `x = 5`