Equations are like number puzzles! They have an equal sign (=) and show that two things are the same.
Simple Example:
If you have 5 apples and eat some, and 2 are left:
5 - ? = 2
The question mark (?) is what we need to find!
Shopping Example:
You have ₹100. You buy a pen for ₹x. You have ₹40 left.
Equation: 100 - x = 40
What is the price of the pen?
Age Example:
Your brother is 3 years older than you. If you are y years old, your brother is y + 3 years old.
If your brother is 15: y + 3 = 15
How old are you?
Cricket Example:
A team needs 50 runs to win. They have scored 35 runs.
Equation: 35 + x = 50
How many more runs do they need?
In this chapter, we will learn:
Simple equations help us:
For Class 7 Students (NCERT & JKBOSE)