Find the value of n.

1. 7y + y = 7y + ny

2. (6+n) x = 15

1) 7y + y = 7y + ny (Combine like terms)

8y = 7y + ny (Subtract 7y from both sides)

y = ny (divide both sides by y)

n = 1

2) (6 + n) x = 15 (Do the multiplication/expand)

6x + nx = 15 (Subtract 6x from both sides)

nx = - 6x + 15 (divide both sides by x)

n = (-6x + 15) / x