4(x - 5) - 23 = 24 . 3
4(x - 5) - 8 = 48
4(x - 5) = 48 + 8
4(x - 5) = 56
x - 5 = 56 : 4
x - 5 = 14
x = 14 + 5
x = 19
Vậy x = 19
4( x - 5 ) - 2^3 = 2^4 . 3
4( x - 5 ) - 8 = 16 . 3
4( x - 5 ) - 8 = 48
4( x - 5 ) = 48 + 8
4( x - 5 ) = 56
x - 5 = 56 : 4
x - 5 = 14
x = 14 + 5
x = 19
Ta có: \(4\left(x-5\right)-2^3=2^4\cdot3\)
\(\Leftrightarrow4\left(x-5\right)=56\)
\(\Leftrightarrow x-5=14\)
hay x=19