Respuesta :

igoroleshko156

Answer:

y = 10

Step-by-step explanation:

Since all sides are equal, that means all angles are 60 degrees. 60 + 60 + 60 = 180

5y + 10 - 10 = 60 - 10

5y / 5 = 50 / 5

y = 10

Answer:  y = 10

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