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x*((4*x-(6*y))/3) = 0
x*((4*x-6*y)/3) = 0
(x*(4*x-6*y))/3 = 0
( 4*x-6*y )
4*x-6*y = 0 // + -6*y
4*x = -(-6*y) // : 4
x = (-(-6*y))/4
x = (3*y)/2
( x )
x = 0
x in { (3*y)/2, 0 }
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