Respuesta :

x
2x+15

3×+15=90
3×=75
×=25

25, 65

25 + 65 = 90

Step-by-step explanation:

Angle = x

Complement = 90 - x

Givem :

90 - x = 2x + 15

3x = 75

x = 25

Complement = 90 - 25 = 65⁰