Respuesta :

3x° = (5x-20)° [Interior Alternate Angle]

=> 3x° = 5x° - 20°

=> 5x° - 3x° = 20°

=> 2x° = 20°

=> x° = [tex]\frac{20°}{2}[/tex]

=> x° = 10°

[tex]\\\\\\[/tex]

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