Question

Answer 1

\(-\dfrac{6}{30}=\dfrac{4}{-20}=\dfrac{3}{-15}=-\dfrac{1}{5}\)

\(\Rightarrow x=4;y=-15;z=-1\)

Answer 2

\(\dfrac{x}{-20}=-\dfrac{6}{30}\)
\(\Rightarrow x=\dfrac{-6\cdot\left(-20\right)}{30}=\dfrac{120}{30}=4\)
\(\dfrac{3}{y}=-\dfrac{6}{30}\)
\(\Rightarrow y=\dfrac{-30\cdot3}{6}=-15\)
\(\dfrac{z}{5}=\dfrac{-6}{30}\)
\(\Rightarrow z=\dfrac{-6\cdot5}{30}=-1\)