AlgèbreFacile
Math Learning PlatformIntroduction to Algebra
Beginner
📚 algebre
📖 About this lesson
Discover algebra basics with simple examples
Lesson Content
Introduction to Algebra
Algebra is a branch of mathematics that uses ,[object Object], to represent numbers.
What is a variable?
A variable is a letter (like x, y, or z) representing an unknown number.
[object Object], x + 5 = 10
Here, x is a variable representing number 5.
Basic rules
- •We can ,[object Object], and ,[object Object], like variables
- •We can ,[object Object], and ,[object Object], variables
- •Order of operations is important (PEMDAS)
Remember
- •A variable can represent any number
- •Equations must be balanced on both sides of equals sign
Practical Examples
1
Example 1
📋 Problem
Résoudre : x + 3 = 7
✅ Solution
x = 4
💡 Explanation
Pour trouver x, on soustrait 3 des deux côtés : x + 3 - 3 = 7 - 3, donc x = 4
2
Example 2
📋 Problem
Résoudre : 2y = 10
✅ Solution
y = 5
💡 Explanation
Pour trouver y, on divise les deux côtés par 2 : 2y ÷ 2 = 10 ÷ 2, donc y = 5