Respuesta :

obakinboluwatife09

Answer:

1'/4

Step-by-step explanation:

perimeter of a triangle is a + b + c

15 = 5n+n+2n-6+1

15 = 8n - 5

15 - 5 = 8n

10 = 8n

n = 10/8

n = 1'/4

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