The line x-1/3=y+1/4=z-2/3 passes through the point (4,2,3).
if line "\\frac{x-1}{3} =\\frac{y+1}{4} = \\frac{z-2}{3}" passes trough the point (4,2,3) then "\\frac{4-1}{3} =\\frac{2+1}{4} = \\frac{3-2}{3}" , but
1 "\\ne" 0.75"\\ne" "\\frac{1}{3}" . so the line doesn't passes through the point(4,2,3)
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