Answer:
n = 19°
Explanation:
The tiny square in the corner of the big angle shows that it is a right angle. Right angles have a measure of 90°. So the two angles labelled added together make a 90° angle.
2n + 3n - 5 = 90
Combine like terms.
5n - 5 = 90
Add 5.
5n = 95
Divide by 5.
n = 19