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CBSE - IX - Mathematics - Linear Equations in Two Variables

how to make an equation

Asked by 28th February 2008, 11:41 AM
Answered by Expert


Let us see u'r query by follwing example

The cost of pencil  is twice  the cost of rubber.

The equivalent linear equation  in two variables of above statement is



Let the cost of pencil be p and the cost of rubber be r.

The cost of pencil is equal to the twice the cost of rubber.


This means          p=2r






Answered by Expert 28th February 2008, 12:01 PM

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