2(k+6)+3k+9=

Solution for 2(k+6)+3k+9= equation:

Simplifying
2(k + 6) + 3k + 9 = 0

Reorder the terms:
2(6 + k) + 3k + 9 = 0
(6 * 2 + k * 2) + 3k + 9 = 0
(12 + 2k) + 3k + 9 = 0

Reorder the terms:
12 + 9 + 2k + 3k = 0

Combine like terms: 12 + 9 = 21
21 + 2k + 3k = 0

Combine like terms: 2k + 3k = 5k
21 + 5k = 0

Solving
21 + 5k = 0

Solving for variable 'k'.

Move all terms containing k to the left, all other terms to the right.

Add '-21' to each side of the equation.
21 + -21 + 5k = 0 + -21

Combine like terms: 21 + -21 = 0
0 + 5k = 0 + -21
5k = 0 + -21

Combine like terms: 0 + -21 = -21
5k = -21

Divide each side by '5'.
k = -4.2

Simplifying
k = -4.2