The equation is .

According to addition property of equality: if a = b, then a + c = b + c.

           (Add 8 to each side)

                       (Apply  additive inverse property: )

n = 13                           (Add: 5 + 8 = 13)

Check:

To check the solution Substitute the value of n = 13 in above equation.

5 = 5                             (Subtract: )

The equality is true

Graph the solution on a number line

The value of n = 13.