Sample Problem for solving the previous homework

     4      =  7
  n + 2       n

so now you cross multiply.

4 * n and 7(n + 2)

4n = 7n + 14

Combine the like terms

4n - 7n = 14, you have to make 7n negative because it switched sides.

-3n = 14, now solve as we have done before

n = 14/-3 or n = -4 2/3 or -4.667