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Class 10 Mathematics - Introduction to Linear Equations in 2 Variables

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Published on Jul 21, 2016

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Class 10 Mathematics – Pair of linear equations in 2 variables
Let’s consider a situation. Rohan tells his daughter, “Seven years ago, I was seven times as old as you were then. Also, three years from now, I shall be three times as old as you will be”. We can consider different cases to find the ages of both Rohan and his daughter. Or is there any other way to find the solution to this problem? Can we form liner equations from these statements and find a solution without checking for different cases? This chapter will clear all of our doubts. We’ll learn
1. What are linear equations in 2 variables?
2. Algebraic and graphical representation of a pair of equations.
3. What is consistency of a pair of equations?
4. How to solve pair of equations by-
a) Substitution method.
b) Elimination method.
c) Cross multiplication method.
5. How to reduce pair of equations to a linear pair?
6. Real life applications.

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