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y-2 = (-2/7)*(x-3) // - (-2/7)*(x-3)
y-((-2/7)*(x-3))-2 = 0
(2/7)*(x-3)+y-2 = 0
2/7*(x-3)+y-2 = 0
2/7*(x-3)+y-2 = 0
2/7*x+y-2-6/7 = 0
2/7*x+y-20/7 = 0
2/7*x+y-20/7 = 0
2/7*x+y-20/7 = 0 // - y-20/7
2/7*x = -(y-20/7) // : 2/7
x = (-(y-20/7))/2/7
x = 7/2*(20/7-y)
x = 7/2*(20/7-y)
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