Answer:

The graph in the attached figure
Explanation:
we have

Applying the distributive property on the left side

Subtract 12 both sides


Multiply by -1 both sides

Divide by 15 both sides

Simplify

The solution is the interval -------> (-∞, -1/3]
All real number less than -1/3
In a number line the solution is the shaded area down of y=-1/3 (close circle)
The graph is the attached figure