We know that we can solve linear equations to find an unknown value by doing the inverse to both sides.

For example:

In this activity, we are going to put a **bracket** into the equation.

It means one more move, but after that we do it the same way. Easy!

Here is one to prove how easy it is!

__Example__

Solve the equation

Before it looks like the ones above, we have to** expand (multiply ou**t) the bracket!

That is 3 times a and 3 times 5:

3 x a is **3a** and 3 x 5 = **15**

Now, it is just like the ones we have done before!

Let's try some more!