By applying the PEMDAS rule, the solution to the given equation is -5.
In order to evaluate and solve this equation, we would have to apply the PEMDAS rule, where mathematical operations within the parenthesis (grouping symbols) are first of all evaluated, followed by exponent, and then multiplication or division from the left side of the expression to the right. Lastly, the mathematical operations of addition or subtraction would be performed from left to right.
Based on the information provided, we have the following mathematical equation:
12k = -60
By dividing both sides of the equation by 12, we have the following;
12k/12 = -60/12
k = -5