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y = (-3/2)*x+9/2-3 // - (-3/2)*x+9/2-3
y-((-3/2)*x)-(9/2)+3 = 0
(3/2)*x+y-9/2+3 = 0
3/2*x+y-3/2 = 0 // - y-3/2
3/2*x = -(y-3/2) // : 3/2
x = (-(y-3/2))/3/2
x = 2/3*(3/2-y)
x = 2/3*(3/2-y)
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