Answer:
x=12degrees
Explanation:
1st Angle=23degrees
2nd Angle=(4x+19)
3rd Angle=(In order to find this angle we need to take this angle as angle3)
angle3+90=180
angle3=180-90
angle3=90degrees
Now lets start with the sum
Sum of angles of a triangle=180degrees
23+(4x+19)+90=180
113+(4x+19)=180
(4x+19)=180-113
(4x+19)=67
4x=67-19
4x=48
x=48/4
x=12degrees
Hope this helps you