Question

solve x and y:
(1). 3/x - 1/y +9=0
2/x + 3y=5

Answer 1

Put 1/× = a,1/y = b
Then, the equation becomes

3a-1b =-9 ------ 1
2a-3b = 5 ------2
Eq. 1 x3 ->9a - 3b=-27
Eq.2 x 1->2a-3b = 5
On solving,
7a = -22 ->a= -22/7
Subsititute in 1 we get
-66/7 - 1b = -9
-66-7b=-63
66 + 7b = 63
7b =-3
b=-3/7