Question

Plz solve this example 17 ch- 3.5 class-10

Answer 1

Step-by-step explanation:

let 1/x=u & 1/y=v

2u+3v=13.....(1)

5u-4v=-2.......(2)

Apply elimination method

(1)×5

10u+15v=65......(3)

(2)×2

10u-8v=-4.........(4)

(3)-(4)

23v=69

v=3

(1)

2u+3.3=13

u=2

so, 1/x=2 & 1/y=3

x=1/2. y=1/3