Answer:
[tex]\Large \boxed{x= \frac{k-7}{6} }[/tex]
Step-by-step explanation:
[tex]6x+7=k[/tex]
Subtracting 7 from both sides.
[tex]6x=k-7[/tex]
Dividing both sides by 6.
[tex]\displaystyle x= \frac{k-7}{6}[/tex]