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3*x-((3*y)/2) = 0
3*x+(-3/2)*y = 0
3*x-3/2*y = 0 // + -3/2*y
3*x = -(-3/2*y) // : 3
x = (-(-3/2*y))/3
x = 1/2*y
x = 1/2*y
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