Overview of Expressions and Equations

Overview of Expressions and Equations

Introduction

In algebra, expressions and equations represent mathematical relationships. An expression combines numbers, variables, and operations without an equals sign, while an equation sho...

Imagine a math classroom where two students write on the board. Cris writes 15 + 3. Sofia writes 15 + 3 = 18. The first one is an expression, and the other is an equation.

An expression is a mathematical phrase using numbers, operation signs, and sometimes variables. It shows a calculation, but does not state an answer. A variable is a le...