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Learn Middle School Math Expressions and equations

Solve your first equations

Undo each step, in reverse order.

Middle School Math: Expressions and equations

Work through it

$x - 4 = 9$

Add 4 to both sides.

$x = 13$

$3 x + 2 = 14$

Subtract 2: $3 x = 12$

Divide by 3: $x = 4$

Watch out for this

$x + 5 = 8$ , so $x = 13$ .

Undo adding 5 by subtracting 5. $x = 3$ .

Your turn

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