Question

please do it for me ​

Answer 1

Step-by-step explanation:

(x+y)/xy = 2 ; (x-y)/xy = 1

x/xy + y/xy = 2

1/y + 1/x = 2

x/xy - y/xy = 1

1/y - 1/x = 1

Now, we have to let

1/y = a

1/x = b

then the equations will be like that :

a + b = 2-------eq 3

a - b = 1--------eq 4

solve them:

a + b =2

a - b =1

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2a - 0 = 3

2a = 3

a = 3/2

put the value of a in equation 1 or 2

a + b = 2

b = 2-a

b = 2 - 3/2

b = 1/2

Now,

1/x =a

1/x = 3/2

x = 2/3

1/y = b

1/y = 1/2

y = 2