Home Practice
For learners and parents For teachers and schools
Full catalogue
Learners Leaderboard Classes/Grades Leaderboard Schools Leaderboard
Pricing Support
Help centre Contact us
Log in

We think you are located in United States. Is this correct?


Test yourself now

High marks in science are the key to your success and future plans. Test yourself and learn more on Siyavula Practice.

Sign up and test yourself

Chapter 9: Algebraic equations (Part 2)

9.1 Introduction

Did you know that you can create an algebraic equation for your family member’s ages?

In algebra, we can use linear equations to solve problems called “age problems”. In these problems, the ages are compared to each other and additional information is given so that you can work out each person’s current age. For example, Robert’s brother is \(5\) years older than him, and his mother’s age is three times his current age. If we do not know Robert’s age, but only know that the sum of ages is \(70\), we can work out how old he are.

In this chapter, we continue to work with algebraic equations. We will use additive and multiplicative inverses, as well as the laws of exponents to solve equations.