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(1/2)*(6*x-(8*y)) = 0
(1/2)*(6*x-8*y) = 0
1/2*(6*x-8*y) = 0
( 1/2 )
1/2 = 0
x belongs to the empty set
( 6*x-8*y )
6*x-8*y = 0 // + -8*y
6*x = -(-8*y) // : 6
x = (-(-8*y))/6
x = (4*y)/3
x = (4*y)/3
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