9514 1404 393
Answer:
x = 24
Step-by-step explanation:
The two angles are complementary, so their sum is 90°.
x° +(3x -6)° = 90°
4x = 96 . . . . . . . . . . . . divide by °, add 6
x = 24 . . . . . . . . . . . . . divide by 4