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(-5/2)*(8*x-(12*y)) = 0
(-5/2)*(8*x-12*y) = 0
-5/2*(8*x-12*y) = 0
( -5/2 )
-5/2 = 0
x belongs to the empty set
( 8*x-12*y )
8*x-12*y = 0 // + -12*y
8*x = -(-12*y) // : 8
x = (-(-12*y))/8
x = (3*y)/2
x = (3*y)/2
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