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15*x^3-(u^3*x^6*((9*x^6*y^3)/6)) = 0
(-3/2)*u^3*x^12*y^3+15*x^3 = 0
15*x^3-3/2*u^3*x^12*y^3 = 0
t_1 = x^3
15*t_1^1-3/2*t_1^4*u^3*y^3 = 0
15*t_1-3/2*t_1^4*u^3*y^3 = 0
3*t_1*(5-1/2*t_1^3*u^3*y^3) = 0
-1/2*t_1^3*u^3*y^3 = -5 // : -1/2*u^3*y^3
t_1^3 = 10*u^-3*y^-3
t_1^3 = 10*u^-3*y^-3 // ^ 1/3
t_1 = 10^(1/3)*u^-1*y^-1
3*t_1 = 0
3*t_1 = 0 // : 3
t_1 = 0
t_1 = 10^(1/3)*u^-1*y^-1
x^3-(10^(1/3)*u^-1*y^-1) = 0
1*x^3 = -(10^(1/3)*u^-1*y^-1) // : 1
x^3 = -(10^(1/3)*u^-1*y^-1)
x^3 = 10^(1/3)*u^-1*y^-1 // ^ 1/3
x = 10^(1/9)*u^(-1/3)*y^(-1/3)
t_1 = 0
x^3+0 = 0
x^3 = 0
1*x^3 = 0 // : 1
x^3 = 0
x = 0
x in { 10^(1/9)*u^(-1/3)*y^(-1/3), 0 }
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