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y-120 = (-919/2)*(x+0) // - (-919/2)*(x+0)
y-((-919/2)*(x+0))-120 = 0
(919/2)*x+y-120 = 0
919/2*x+y-120 = 0 // - y-120
919/2*x = -(y-120) // : 919/2
x = (-(y-120))/919/2
x = 2/919*(120-y)
x = 2/919*(120-y)
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