Question

10. (1) 8/x - 5/y =34. 3/x - 2/y =13​

Answer 1

Step-by-step explanation:

let 1/x = p

1/y = q

these are two equations :

8p - 5q = 34

3p - 2 q = 13

substitute the 2nd equation :

3p = 13 + 2q

p = 13 + 2q / 3

put it in 1st equation :

8(13+2q) / 3 -5q = 34

104 + 16 q / 3 -5q = 34

104 + 16 q - 15q = 102

q = 102 - 104

q = -2

put the value of q in 3 rd equation :

p = 13 -4 / 3

p = 7/3