`x - 32 - 125 = 0`
$\Rightarrow$ `x - 157 = 0`
$\Rightarrow$ `x = 0 + 157`
$\Rightarrow$ `x = 157`
$\text{Vậy}$ `x = 157`
_________________
`165 - x + 62 = 185`
$\Rightarrow$ `165 - x = 185 - 62`
$\Rightarrow$ `165 - x = 123`
$\Rightarrow$ `x = 165 - 123`
$\Rightarrow$ `x = 42`
$\text{Vậy}$ `x = 42`
_____________________
`12x - 33 = 3^{2} . 3^{3}`
$\Rightarrow$ `12x - 33 = 3^{5}`
$\Rightarrow$ `12x - 33 = 243`
$\Rightarrow$ `12x = 243 + 33`
$\Rightarrow$ `12x = 276`
$\Rightarrow$ `x = 276 : 12`
$\Rightarrow$ `x = 23`
$\text{Vậy}$ `x = 23`
