Question

in substitution method??​

Answer 1

Answer:

let 1/x=a and 1/y=b then

8a-9b =1,....(1) and 10a+6b==7...(2)

multipling (1) by6 and eq.(2) by9 and eq (1) and eq(2)

138a=69

a=1/2 and b=1/3

but1/x=a and 1/y=b

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

then x=2and y=3