The problem tells you that the sum of the angles is 90 degrees.
2x - 10 represents one angle.
3x - 10 represents the other angle.
2x - 10 + 3x - 10 = 90
Can you take it from here?
Answer:
Sleep well
Step-by-step explanation:
108
cross multiply fractions:
12/72 = 18/x
x = 108