# Question #a5c7c

##### 1 Answer

Jan 7, 2018

#### Answer:

Substitution means putting in a value in place of another, so let's give it ago.

#### Explanation:

We know that both equations consist of two variables,

In all honesty, you can go either way however as we can make a nice equation for

So we need to rearrange

Now we have an equation for x, so whenever we see in an

Now we find