Q. 93.7( 3 Votes )

Solve each of the following systems of equations using matrix method.

5x + 2y = 4;

7x + 3y = 5.

Answer :


To find: - x , y


Given set of lines are : -


5x + 2y = 4;


7x + 3y = 5.


Converting the following equations in matrix form,


AX = B



5R2 – 7R1



Again converting into equation form, we get


5x + 2y = 4;


y = - 3


5x + 2× - 3 = 4


5x = 10


X = 2


x = 2 , y = - 3


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