Answer:
[tex] \boxed{\sf x = \frac{c + k}{5}} [/tex]
Step-by-step explanation:
[tex] \sf Solve \: for \: x: \\ \sf \implies 5x - c = k \\ \\ \sf Add \: c \: to \: both \: sides: \\ \sf \implies 5x = c + k \\ \\ \sf Divide \: both \: sides \: by \: 5: \\ \sf \implies x = \frac{c + k}{5} [/tex]