Question

Answer 1

k: \(5:\left(-\dfrac{5}{2}\right)^2+\dfrac{2}{15}\cdot\sqrt{\dfrac{9}{4}}-\left(-2018\right)^0+0,25\)

\(=5:\dfrac{25}{4}+\dfrac{2}{15}\cdot\dfrac{3}{2}-1+0,25\)

\(=\dfrac{4}{5}+\dfrac{3}{15}-0,75\)

\(=\dfrac{4}{5}+\dfrac{1}{5}-0,75=1-0,75=0,25\)

m: \(-\dfrac{12}{17}+\dfrac{7}{13}+\dfrac{-5}{17}+\dfrac{6}{13}-\dfrac{20}{5}\)

\(=\left(-\dfrac{12}{17}-\dfrac{5}{17}\right)+\left(\dfrac{7}{13}+\dfrac{6}{13}\right)-\dfrac{20}{5}\)

\(=-1+1-4=-4\)