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(16*x^2)/y-((((3/12)*x^2)/3)*y)-9 = 0
(-1/12)*x^2*y+(16*x^2)/y-9 = 0
16*x^2*y^-1-1/12*x^2*y-9 = 0
t_1 = x^2
16*t_1^1*y^-1-1/12*t_1^1*y-9 = 0
16*t_1*y^-1-9 = 0 // + 9
16*t_1*y^-1 = 9 // : 16*y^-1
t_1 = 9/(16*y^-1)
t_1 = 9/(16*y^-1)
x^2-(9/(16*y^-1)) = 0
x^2+(-9/16)*y = 0
1*x^2 = -(-9/16*y) // : 1
x^2 = 9/16*y
x^2 = 9/16*y // ^ 1/2
abs(x) = 3/4*y^(1/2)
x = 3/4*y^(1/2) or x = -(3/4*y^(1/2))
x in { 3/4*y^(1/2), -(3/4*y^(1/2)) }
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