Answer:
x = 45
Step-by-step explanation:
x and 3x are adjacent angles and the form a straight line. Their sum will be 180 degrees
x +3x = 180
Combine like terms
4x = 180
Divide each side by 4
4x/4 = 180/4
x =45
45°
The angle of a supplementary line is 180 degrees, this means that:
x+3x=180 Solve for x
4x=180
x=45, The value of x is 45°
