Question

plss guys solve this question
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Answer 1

SOLUTION:-

2/x + 3/y = 9/xy . 4/x +9/y = 21/xy

(3x+2y)xy =9/xy , (9x+4y) = 21/xy

3x+2y = 9 .......(1) , 9x+4y = 21..........(2)

maltiply by eq(1)×3 -eq(2)

9x+6y = 27

9x+4y = 21

______________ subtraction

2y = 6

y = 3

y's value puting in eq(1)

3x+2×3= 9

3x = 9-6

x= 3/3

x =1

(x,y)=(1,3)ans

Answer 2

Hey

consider 1/x = p and 1/y = q

p - 4q = 2 .... (1)

p + 3q = 9 ..... (2)

(1) - (2)

-4q - 3q = 2 - 9

-7q = -7

q = 1

sub q in (1) or (2)

p - 4(1) = 2

p - 4 = 2

p = 4 +2

p = 6

AS WE ALREADY SAID

1/x = p

1/x = 6

6x = 1

x = 1/6

1/y = q

1/y = 1

y = 1