How do you solve this step by step??

Answer:
x = -1
Step-by-step explanation:
[tex]23 - 4x = 27 \\ subtract \: 23 \: from \: both \: sides \\ 23 - 23 - 4x = 27 - 23 \\ - 4x = 4 \\ divide \: both \: sides \: by \: - 4 \\ \frac{ - 4x}{ - 4} = \frac{4}{ - 4} \\ x = - 1[/tex]