23=12-(6+k)

Solution for 23=12-(6+k) equation:

Simplifying
23 = 12 + -1(6 + k)
23 = 12 + (6 * -1 + k * -1)
23 = 12 + (-6 + -1k)

Combine like terms: 12 + -6 = 6
23 = 6 + -1k

Solving
23 = 6 + -1k

Solving for variable 'k'.

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

Add 'k' to each side of the equation.
23 + k = 6 + -1k + k

Combine like terms: -1k + k = 0
23 + k = 6 + 0
23 + k = 6

Add '-23' to each side of the equation.
23 + -23 + k = 6 + -23

Combine like terms: 23 + -23 = 0
0 + k = 6 + -23
k = 6 + -23

Combine like terms: 6 + -23 = -17
k = -17

Simplifying
k = -17