Answer:
The answer is k = -13.
Step-by-step explanation:
1) Subtract 6 from both sides.
[tex] - 7 - 6 = k[/tex]
2) Simplify -7-6 to -13.
[tex] - 13 = k[/tex]
3) Switch sides.
[tex]k = - 13[/tex]
Therefor, the answer would be k = -13.