**Algebra Review**

The key to solving simple algebraic equations containing a single unknown (e.g. x + 6 = 10) is to realize that the equation is an equality.As long as you do the same mathematical operation (e.g. add a constant, subtract a constant, multiply by a constant, and divide by a constant) to both sides of the equation, the equality is still an equality. This includes squaring both sides of the equation or taking the square root of both sides of the equation.

**Fundamental Laws:**

- Distributive Law: 3(x + 2) = 3x + (3)(2) = 3x + 6
- Associative Law: 4x – 7x = x(4 – 7) = -3x

**QUIZ: Solve for x.**

Question 1 |
Question 2 |
Question 3 |
Question 4 |

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**Answers: (1)** +2** (2)** +2 **(3)** -9.25** (4)** +1.90

This page adapted from a math review for chemistry students at Texas A&M University