Respuesta :

baabaagreysheep

n = 9

5n + 5n - 8n = 18

10n - 8n = 18

2n = 18

(÷ 2)

n = 9

I hope this helps!

tojuaghante

Answer:

9

Step-by-step explanation:

5n + 5n - 8n = 18

Taking common terms;

(5+5-8)n = 18

2n = 18

Divide through by 2

2n/2 = 18/2

n = 9

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