Respuesta :

mathstudent55

Answer:

x + y + 90 = 180

x = 67

y = 23

Step-by-step explanation:

x + y + 90 = 180

x + 2 = 3y

x + y = 90

x - 3y = -2

      x  +  y = 90

(+)  -x + 3y =  2

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            4y = 92

y = 23

x + y = 90

x + 23 = 90

x = 67