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Maths / Linear Equations in Two Variables / Elimination Method
QUESTION
 

Solve the following pair of linear equations  :      large 21x+47y=110   and     large 47x+21y=162

EXPLANATION
Explain TypeExplanation Content
Text

We have 

21x+47y=110                     (1)

47x+21y=162                     (2)

Multiplying Equation (1) by 47 and Equation (2) by 21,we get

                987x+2209y=5170                   (3)

                987x+441y=3402                      (4)

So,       x=3,y=1

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