½(k + 12) = k + 4

Where:

½ is the condition given to the sum

(k + 12) is the sum

"=" sign is the indication that it is identical.

k + 4 is the equality expression of the sum.

Solving for k

½k + 6 = k + 4

k - ½k = 6 - 4

½k = 2

k = 4

For checking.

½(k + 12) = k + 4

½(4 + 12) = 4 + 4

½(16) = 8

8 = 8

So, I hope you understand the concept from the solution. God bless you.