Question

\(6\dfrac{9}{10}+\left(\dfrac{2}{5}-\dfrac{1}{10}\right).50\%\)

Answer 1

\(\dfrac{69}{10}+\left(\dfrac{4}{10}-\dfrac{1}{10}\right)x\dfrac{1}{2}=\dfrac{69}{10}+\dfrac{3}{10}x\dfrac{1}{2}=\dfrac{69}{10}+\dfrac{3}{20}=\dfrac{138}{20}+\dfrac{3}{20}=\dfrac{141}{20}\)

Answer 2