Q. 12

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

5x + 7y + 2 = 0;

4x + 6y + 3 = 0.

Answer :


To find: - x , y


Given set of lines are : -


5x + 7y + 2 = 0;


4x + 6y + 3 = 0.


Converting the following equations in matrix form,


AX = B



5R2 – 4R1



Again converting into equation form, we get


5x + 7y = - 2


2y = - 7


Y =


5x + 7 = - 2


5x = - 2 +


5x =


X =



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