Answer:
h = 9
Step-by-step explanation:
To begin, remember that the total of the angles on a straight line is 180 degrees.
In this scenario, we'll have to equate both given values, which will be:
180° = 3h + 18° + 15h
Organize similar terms.
180° - 18° = 3h + 15h
18h = 162°
18 divided on both side
162°/18h = 18h/18
h = nine
As a result, the value of h will be nine.
