Question

\(\left(35\%-\dfrac{3}{20}\right):\left(\dfrac{1}{2}\right)^2-1\dfrac{3}{5}.0,75\)

Answer 1

\(\left(\dfrac{35}{100}-\dfrac{3}{20}\right)\times4-\dfrac{8}{5}\times\dfrac{3}{4}=\dfrac{1}{5}\times4-\dfrac{8}{5}\times\dfrac{3}{4}=\dfrac{4}{5}-\dfrac{6}{5}=-\dfrac{2}{5}\)

Answer 2

\(\left(35\%-\dfrac{3}{20}\right):\left(\dfrac{1}{2}\right)^2-1\dfrac{3}{5}\cdot0,75=\left(\dfrac{7}{20}-\dfrac{3}{20}\right):\dfrac{1}{4}-\dfrac{8}{5}\cdot\dfrac{3}{4}=\dfrac{4}{20}\cdot4-\dfrac{8}{5}\cdot\dfrac{3}{4}=\dfrac{1}{5}\cdot4-\dfrac{8}{5}\cdot\dfrac{3}{4}=\dfrac{4}{5}-\dfrac{6}{5}=-\dfrac{2}{5}\)

Answer 3

=(7/20-3/20):1/4-8/5x3/4

=1/5x4-24/20

=4/5-6/5=-2/5