Question

Solve the pair of linear equations
(i) 152x-378y = -74 ; -378x+152y = -604
(ii) 47x+31y =63 ; 31x+47y =15
(iii) px+qy = p-q ; qx-py = p+q
(iv) (a-b)x+(a+b)y= a^2 -2ab-b^2 ; (a+b)(x+y) = a^2 +b^2

Answer 1

Answer:

Solve the pair of linear equations

(i) 152x-378y = -74 ; -378x+152y = -604

(ii) 47x+31y =63 ; 31x+47y =15

(iii) px+qy = p-q ; qx-py = p+q

(iv) (a-b)x+(a+b)y= a^2 -2ab-b^2 ; (a+b)(x+y) = a^2 +b^2