\(A=\dfrac{3469-54}{6938-108}\)
\(A=\dfrac{3415}{6830}\)
\(A=\dfrac{3415}{6830}=\dfrac{3415:3415}{6830:3415}=\dfrac{1}{2}=\dfrac{3}{6}\)
\(B=\dfrac{2468-98}{3702-147}\)
\(B=\dfrac{2370}{3555}\)
\(B=\dfrac{2370}{3555}=\dfrac{2370:1185}{3555:1185}=\dfrac{2}{3}=\dfrac{4}{6}\)