Equations

Table of Contents

• Expressions
  • Numerical Expression
  • Algebraic Expression
• Equations
  • Different Parts of an Equation
• Summary
• What’s Next?

In the previous segment of Class 8 Maths, we learnt what Comparing Quantities is. In this segment, we will learn about Equations.

What are Expressions?

An Expression is a number, a variable, or a combination of numbers, variables, and operation symbols.

For example,

• x + 3
• y – 10
• 19 x 3

An expression can be of one of the following two types:

Numerical expression

This is an expression that consists only of numbers. For example,

• • 13 + 6
  • 15 – 5
  • 16 x 15

Algebraic expression

This is an expression that consists of only variables or variables and numbers together. For example,

• • 6 + y
  • x – 12
  • 15xy