Respuesta :

kamraaa
180 - (x+3) = 2x - 6
180 + 6 = 2x + x +3
183 = 3x
x = 61
Proof:
The 2 angles should equal to 180°.
61 + 3 = 64°
2(61) - 6 = 116°
64 + 116 = 180°
Therefore x is 61°.