Скачать или смотреть NCERT MATHS class 7 chapter 4 Simple Equation (Introduction)

Here is a clear and simple description of NCERT Maths Class 7, Chapter 4 – Simple Equations (Introduction):


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⭐ Introduction to Simple Equations

An Equation is a mathematical statement where two expressions are equal, and it uses an equal sign (=).
For example:
  x + 5 = 12

Here, x is an unknown number, and our goal is to find the value of x that makes the equation true.


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🔍 What is a Simple Equation?

A Simple Equation is a basic algebraic equation where there is only one unknown variable (usually denoted by x, y, etc.), and it can be solved by simple operations such as addition, subtraction, multiplication, or division.


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➕ Example of Simple Equation

1. x + 7 = 15
 To solve for x, subtract 7 from both sides:
 x + 7 – 7 = 15 – 7 → x = 8


2. 3x = 21
 To solve for x, divide both sides by 3:
 3x ÷ 3 = 21 ÷ 3 → x = 7




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✅ Why do we learn Simple Equations?

It helps us solve problems where some data is missing.

Equations are used in real life, for example:   - Calculating expenses   - Finding ages   - Finding distances, time, etc.



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🌟 Key Concept

To solve an equation, we must perform the same operation on both sides to keep it balanced.

Operations include addition, subtraction, multiplication, and division.



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📚 Conclusion

This chapter introduces you to simple equations, the method to solve them step by step, and shows you how useful they are for solving everyday problems.


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