x - 36 : 18 = 12
x - 2 = 12
x = 12 + 2
x = 14
(x : 23 + 45) . 67 = 8911
x : 23 + 45 = 8911 : 67
x : 23 + 45 = 133
x : 23 = 133 - 45
x : 23 = 88
x = 88 . 23
x = 2024
(x - 5)(x - 7) = 0
=> \(\orbr{\begin{cases}x-5=0\\x-7=0\end{cases}}\)
=> \(\orbr{\begin{cases}x=5\\x=7\end{cases}}\)
x - 36 : 18 = 12
=> x - 36 = 216
=> x = 252
( x : 23 + 45 ) . 67 = 8911
=> x : 23 + 45 = 133
=> x : 23 = 88
=> x = 2024
( x - 5 )( x - 7 ) = 0
=> [x - 5 = 0 => x = 5
=> [ x - 7 = 0 => x = 7