- Data Structure
- Networking
- RDBMS
- Operating System
- Java
- MS Excel
- iOS
- HTML
- CSS
- Android
- Python
- C Programming
- C++
- C#
- MongoDB
- MySQL
- Javascript
- PHP
- Physics
- Chemistry
- Biology
- Mathematics
- English
- Economics
- Psychology
- Social Studies
- Fashion Studies
- Legal Studies
- Selected Reading
- UPSC IAS Exams Notes
- Developer's Best Practices
- Questions and Answers
- Effective Resume Writing
- HR Interview Questions
- Computer Glossary
- Who is Who
How to solve simultaneous linear equations?
 Simultaneous linear equations or linear simultaneous equations:
-   Two linear equations in two variables taken together are called simultaneous linear equations.
- The solution of system of simultaneous linear equation is the ordered pair (x, y) which satisfies both the linear equations.    
-    For example,   $ 2x+3y-7 = 0$ and $x+2y-4=0$ is a system of linear equations.  The solution of the above system of linear equations is (2,1).
In the above example,
Multiplying $x+2y-4=0$ by 2, we get,
$2(x+2y-4)=2(0)$
$2x+4y-8=0$
Subtracting $ 2x+3y-7=0$ from $2x+4y-8=0$, we get,
$2x+4y-8-2x-3y-(-7)=0$
$y-1=0$
$y=1$
Substituting $y=1$ in $ 2x+3y-7=0$, we get,
$2x+3(1)-7=0$
$2x=7-3$
$x=\frac{4}{2}$
$x=2$
The solution of the system of linear equations is $(2,1)$.
Advertisements