Question

Answer 1

c: \(\dfrac{31}{17}\cdot0,24+\left(-0,24\right)\cdot\dfrac{14}{17}\)

\(=0,24\left(\dfrac{31}{17}-\dfrac{14}{17}\right)\)

\(=0,24\cdot1=0,24\)

d: \(-\dfrac{5}{7}\cdot\dfrac{2}{11}-\dfrac{5}{7}\cdot\dfrac{9}{11}+\dfrac{5}{7}\)

\(=\dfrac{5}{7}\left(-\dfrac{2}{11}-\dfrac{9}{11}\right)+\dfrac{5}{7}\)

\(=-\dfrac{5}{7}+\dfrac{5}{7}=0\)