Answer: 22.5 degrees
Explanation:
The sum of the angles of a triangle is 180 degrees.
So we can set up an equation to solve for x.
x + 45 + 5x = 180.
Combine like terms of x:
6x + 45 = 180
Subtract 45 from both sides:
6x = 135
Divide both sides by 6:
x = 22.5 degrees