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Y+6 = (5/6)*(x-4) // - (5/6)*(x-4)
Y-((5/6)*(x-4))+6 = 0
(-5/6)*(x-4)+Y+6 = 0
Y-5/6*(x-4)+6 = 0
Y-5/6*(x-4)+6 = 0
Y-5/6*x+10/3+6 = 0
Y-5/6*x+28/3 = 0
Y-5/6*x+28/3 = 0
Y-5/6*x+28/3 = 0 // - Y+28/3
-5/6*x = -(Y+28/3) // : -5/6
x = (-(Y+28/3))/(-5/6)
x = 6/5*(Y+28/3)
x = 6/5*(Y+28/3)
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