Respuesta :

Answer:

NA = 9 units

Step-by-step explanation:

The incentre is equally far away from the triangle's 3 sides , then

MA = LA , that is

6x - 3 = 5x - 1 ( subtract 5x from both sides )

x - 3 = - 1 ( add 3 to both sides )

x = 2

Then

LA = 5x - 1 = 5(2) - 1 = 10 - 1 = 9 , so

NA = LA = 9 units