Solve for x and y 12/x+y + 21/x-y = 7
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12/x+y + 21/x-y = 7
12/x+y + 21/x-y take Lcm for x+y and x-y
12x - 12y / x^2 - y^2 + 21x +21y / x^2 - y^2
33x + 9y / x^2 - y^2 = 7
7x - 7 y = 33x +9y
-16= y
26= x
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Step-by-step explanation:
Solution,
12 + 21 = 7
x + y x - y
or, 12(x-y) + 21 (x+y) = 7
(x^2 - y^2)
or, 12x - 12y + 21x + 21y = 7
(x^2 + y^2)
or, 33x - 9y = 7
(x^2 - y^2)
or, 33x - 9y = 7 ( x^2 - y^2)
or, 33x - 9y = 7x^2 - 7y^2
or, 33x - 7x^2 = 9y - 7y^2
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