Linear equations and inequalities

We will now equate two algebraic expressions and think about how it might constrain what value the variables can take on. The algebraic manipulation you learn here really is the heart of algebra.
14 exercises available

Learn how to solve linear equations that have the variable on both sides of the equation. For example, solve 2x+5=6x-3. Also learn how to solve linear equations with expressions in parentheses. For example, 3(x-1)=9.

Learn how to solve (mathematical) inequalities. A key concept in this tutorial is flipping the inequality sign when multiplying or dividing both sides by a negative number.