Respuesta :

Answer:

n = [tex]\frac{(5a + 42)}{( 7 - a ) }[/tex]

Step-by-step explanation:

7(n - 6) = a(n + 5)

7n - 42 = an + 5a

7n - an = 5a + 42

n( 7 - a ) = 5a + 42

n = [tex]\frac{(5a + 42)}{( 7 - a ) }[/tex]