Question

Answer 1

\(\dfrac{0,4-\dfrac{2}{7}+\dfrac{2}{11}}{\dfrac{3}{7}-\dfrac{3}{11}-0,6}-\dfrac{\dfrac{1}{3}-0,25+\dfrac{1}{5}}{0,5-\dfrac{3}{8}+0,3}\)

\(=\dfrac{\dfrac{2}{5}-\dfrac{2}{7}+\dfrac{2}{11}}{-\dfrac{3}{5}+\dfrac{3}{7}-\dfrac{3}{11}}-\dfrac{\dfrac{1}{3}-\dfrac{1}{4}+\dfrac{1}{5}}{\dfrac{3}{6}-\dfrac{3}{8}+\dfrac{3}{10}}\)

\(=\dfrac{2\left(\dfrac{1}{5}-\dfrac{1}{7}+\dfrac{1}{11}\right)}{-3\left(\dfrac{1}{5}-\dfrac{1}{7}+\dfrac{1}{11}\right)}-\dfrac{\dfrac{1}{3}-\dfrac{1}{4}+\dfrac{1}{5}}{\dfrac{3}{2}\left(\dfrac{1}{3}-\dfrac{1}{4}+\dfrac{1}{5}\right)}\)

\(=-\dfrac{2}{3}-1:\dfrac{3}{2}=-\dfrac{2}{3}-\dfrac{2}{3}=-\dfrac{4}{3}\)