Solve 12 = 4n

Step by step

The question

Question: solve 12 = 4n.

Let's swap the two sides, so n is on the left.

1 Remove the 4

4n means 4 times n.

We want just n.

To remove times 4, we divide by 4.

We do it on both sides.

Why both sides?

The = sign means both sides are the same amount.

If we change only one side, they are not the same any more.

4 divided by 4 is 1.

So just n is left.

12 divided by 4 is 3.

So n = 3!

2 Check

Let's check: put 3 in place of n.

First the left side.

Now the right side.

Both sides are 12.

So n = 3 is right!

Let's look back.

First: remove the 4.

Last: check.