Question

Answer 1

\(=\dfrac{7}{2}\)\(a,=\left(\dfrac{7}{13}+\dfrac{10}{13}+\dfrac{9}{13}\right)+\left(\dfrac{3}{8}+\dfrac{5}{8}\right)+\dfrac{5}{10}\)

\(=2+1+\dfrac{1}{2}\)

\(=3+\dfrac{1}{2}\)

\(=\dfrac{7}{2}\)

\(b,=\dfrac{1}{2}\times\left(\dfrac{9}{10}+\dfrac{8}{10}+\dfrac{3}{10}\right)\)

\(=\dfrac{1}{2}\times2\)

\(=1\)