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y-12 = (5/12)*(x-6) // - (5/12)*(x-6)
y-((5/12)*(x-6))-12 = 0
(-5/12)*(x-6)+y-12 = 0
y-5/12*(x-6)-12 = 0
y-5/12*(x-6)-12 = 0
y-5/12*x-12+5/2 = 0
y-5/12*x-19/2 = 0
y-5/12*x-19/2 = 0
y-5/12*x-19/2 = 0 // - y-19/2
-5/12*x = -(y-19/2) // : -5/12
x = (-(y-19/2))/(-5/12)
x = -12/5*(19/2-y)
x = -12/5*(19/2-y)
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