यदि (2)/(x) + (3)/(y) = (9)/(xy) और (4)/...

यदि `(2)/(x) + (3)/(y) = (9)/(xy)` और `(4)/(x) + (9)/(y) = (21)/(xy)` जहाँ `x nr 0` और `y ne 0` हो. तो x + y का क्या मान है ?

A

A)2

B

B)3

C

C)4

D

D)8

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