 ## Algebra wouldn't be fun if it were this easy to find x!

It's all about using step-by-step logic to figure out missing numbers.

## One Always Equals The Other Equation comes from the word equal, so one side of an equation will always be equal to the other side. If you can find the value of one side, you'll know the value of the other.

## Work it out!

### 2x = 12 - 8

• What's the value of the right side?

• What number, if you multiply it by 2, will give you the same value of the right side?

What's x?

1

2

3

4

## Opposites Attract Since both sides of an equation are equal, they'll balance each other out. If you look at one side's symbol and apply the opposite symbol to the other side, you can find the balance to work out the equation. Think of it like a seesaw. If the person on the left of the seesaw is up in the air, the other person has to push down on the other side for the seesaw to even out.

So if one side has multiplication? Use division on the other side to work out the balance.

## Work it out!

### 5x - 3 = 12

You need to isolate x on the left side, so you need to get 5 and 3 to the right side.

### Follow the steps below to solve this equation:

• Move - 3 to the right side, make it + 3, and add it to 12

• The value of the right side: 12 + 3 = 15

• Move 5 to the right side and divide it into 15

What's x?

2

3

4

5

## Take Action ## Who knows what you'll be able to solve next!

Once you're comfortable with these go-to strategies for solving x, you'll be able to do more and more with algebra.

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