RS Aggarwal Chapter 3 Class 10 Maths Exercise 3.2 (ex 3b) Solutions

RS Aggarwal Chapter 3 Class 10 Maths Exercise 3.2 Solutions: The solutions of RS Agarwal for Class 10, Chapter 3, are ready to help you understand the graphical representation of linear equations. In this chapter of RS Aggarwal Class 10 Maths Solutions, you will solve linear equations simultaneously in two variables and then create a graph for the equations. You will learn about algebraic methods of solving cross-multiplication, elimination, and substitution of equations. You will identify coherent systems of equations and show how the equation system has unique solutions.

In Exercise 3b you will find equations that can be solved using the elimination method and the replacement method.

Download RS Aggarwal Chapter 3 Class 10 Maths Exercise 3.2 Solutions

RS-Aggarwal-Class-10-Solutions-Chapter-3-Exercise-3B

Important Definition for RS Aggarwal Chapter 3 Class 10 Maths Ex 3b Solutions

Substitution Method

An equation can be solved by this method when you find one variable from either equation and substitute its value in the other equation.

For instance, x+2y=3 and 4x+5y=6

Step 1: Let’s consider equation (1), x+2y=3

So we write as x=3-2y

Step 2: Substituting the value of x in equation (2),  4x+5y=6

We have 4(3-2y)+5y=6

12-8y+5y=6

12-3y=6

 y=2

Step 3: Substituting the value of y in x=3-2y, we have x= 1

Final answer: x=1, y=2

Elimination Method

This method is considered more convenient. It is solved by multiplying both the equations by some non zero constant and after that adding or subtracting one equation from another to eliminate one variable. By solving one variable you obtain the value of another variable by substitution. 

Know more at the official website.

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