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(-1/2)*(x+5)+2*3*y = 0
6*y-1/2*(x+5) = 0
6*y-1/2*(x+5) = 0
6*y-1/2*x-5/2 = 0
6*y-1/2*x-5/2 = 0
6*y-1/2*x-5/2 = 0 // - 6*y-5/2
-1/2*x = -(6*y-5/2) // : -1/2
x = (-(6*y-5/2))/(-1/2)
x = -2*(5/2-(6*y))
x = -2*(5/2-(6*y))
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