Question

-11k-9(9+k)=-11(1+5k)
solve the equation

Answer 1

multiply by the number outside the parenthesis.

-11k - 9(9+k) = -11(1+5k)
-11k - 81 - 9k = -11 - 55k

combine like terms

-11k - 9k + 55k = 81 - 11
35k = 70
k = 70/35
k = 2

Answer 2

The answer to your equation is k=2