Chapter I : Linear Equations in two variables in two variables

Example 1. Solve the system of equation:

Solution :

Here ,

and a1b2 - a2b1

=1 x 2 - 3 x (-4)

= 2 + 12

=

The system has unique solution.

Or,

Or,

Or, x = 28/14 = 2,

Or, y = 56/14 = 4

 

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Subjects Maths (Part-1) by Mr. M. P. Keshari
Chapter 1 Linear Equations in Two Variables
Chapter 2 HCF and LCM
Chapter 3 Rational Expression
Chapter 4 Quadratic Equations
Chapter 5 Arithmetic Progressions
Chapter 6 Instalments
Chapter 7 Income Tax
Chapter 8 Similar Triangles