\(A=\dfrac{4}{7}+\dfrac{2}{7}+\dfrac{1}{7}+\dfrac{3}{4}+\dfrac{5}{4}=1+2=3\)
\(B=\left(\dfrac{5}{2}+\dfrac{7}{2}\right)+\left(\dfrac{3}{8}+\dfrac{6}{8}\right)+\left(\dfrac{6}{11}+\dfrac{5}{11}\right)=2+\dfrac{9}{8}=\dfrac{25}{8}\)
\(C=\left(\dfrac{4}{3}+\dfrac{7}{3}+\dfrac{1}{3}\right)+\left(\dfrac{3}{5}+\dfrac{2}{5}\right)=4+1=5\)
\(D=\left(\dfrac{5}{12}+\dfrac{2}{12}\right)+\left(\dfrac{5}{3}+\dfrac{2}{3}\right)=\dfrac{7}{12}+\dfrac{7}{3}=\dfrac{7+7\cdot4}{12}=\dfrac{35}{12}\)
\(E=\dfrac{-5}{7}-\dfrac{2}{7}+\dfrac{3}{4}+\dfrac{1}{4}-\dfrac{1}{5}=-\dfrac{1}{5}\)
\(A=\left(\dfrac{4}{7}+\dfrac{2}{7}+\dfrac{1}{7}\right)+\left(\dfrac{3}{4}+\dfrac{5}{4}\right)\)
\(=1+2=3\)
\(B=\left(\dfrac{5}{2}+\dfrac{7}{2}\right)+\left(\dfrac{6}{11}+\dfrac{5}{11}\right)+\left(\dfrac{3}{8}+\dfrac{6}{8}\right)\)
\(=6+1+\dfrac{9}{8}\)
\(=8\dfrac{1}{8}=8,125\)
\(C=\left(\dfrac{4}{3}+\dfrac{7}{3}+\dfrac{1}{3}\right)+\left(\dfrac{3}{5}+\dfrac{2}{5}\right)\)
\(=4+1=5\)
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