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y-4 = (-5/15)*(x-2) // - (-5/15)*(x-2)
y-((-5/15)*(x-2))-4 = 0
(1/3)*(x-2)+y-4 = 0
1/3*(x-2)+y-4 = 0
1/3*(x-2)+y-4 = 0
1/3*x+y-4-2/3 = 0
1/3*x+y-14/3 = 0
1/3*x+y-14/3 = 0
1/3*x+y-14/3 = 0 // - y-14/3
1/3*x = -(y-14/3) // : 1/3
x = (-(y-14/3))/1/3
x = 3*(14/3-y)
x = 3*(14/3-y)
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