3K+2(K+3)=31

Solution for 3K+2(K+3)=31 equation:

Simplifying
3K + 2(K + 3) = 31

Reorder the terms:
3K + 2(3 + K) = 31
3K + (3 * 2 + K * 2) = 31
3K + (6 + 2K) = 31

Reorder the terms:
6 + 3K + 2K = 31

Combine like terms: 3K + 2K = 5K
6 + 5K = 31

Solving
6 + 5K = 31

Solving for variable 'K'.

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

Add '-6' to each side of the equation.
6 + -6 + 5K = 31 + -6

Combine like terms: 6 + -6 = 0
0 + 5K = 31 + -6
5K = 31 + -6

Combine like terms: 31 + -6 = 25
5K = 25

Divide each side by '5'.
K = 5

Simplifying
K = 5