# How do you solve #\frac { 7} { n + 3} = \frac { 3} { 9}#?

##### 1 Answer

Jul 20, 2017

Simply cross multiply.

#### Explanation:

As you can see in my explanation we first start off by cross multiplying:

We then subtract the

Then we simply divide by

Therefore, our answer is

However, if this is true, when you cross multiply again, they should be the same number.

They check out, so this answer is valid and correct.