3=K(-15)

Solution for 3=K(-15) equation:

Simplifying
3 = K(-15)

Reorder the terms for easier multiplication:
3 = -15K

Solving
3 = -15K

Solving for variable 'K'.

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

Add '15K' to each side of the equation.
3 + 15K = -15K + 15K

Combine like terms: -15K + 15K = 0
3 + 15K = 0

Add '-3' to each side of the equation.
3 + -3 + 15K = 0 + -3

Combine like terms: 3 + -3 = 0
0 + 15K = 0 + -3
15K = 0 + -3

Combine like terms: 0 + -3 = -3
15K = -3

Divide each side by '15'.
K = -0.2

Simplifying
K = -0.2