Answer:
[tex]\frac{1}{2}[/tex] x = 80
(x -15) = 145
(x - 25) = 135
Step-by-step explanation:
Add all the angles and equal them to 540
[tex]\frac{1}{2}[/tex] x + [tex]\frac{1}{2}[/tex] x + (x -15) + 100 + (x - 25) = 540
add x's and numbers together
x + x - 15 + 100 + x - 25 = 540
3x + 60 = 540
3x = 480
x = 160,
substitute into angles
[tex]\frac{1}{2}[/tex] x = [tex]\frac{1}{2}[/tex] (160) = 80
[tex]\frac{1}{2}[/tex] x = [tex]\frac{1}{2}[/tex] (160) = 80
(x -15) = 160 - 15 = 145
100
(x - 25) = (160 - 25) = 135
adding all angles equal to 540
