is -20/5 equivalent
\(-\frac{20}{5}\\\\=-\frac{20:5}{5:5}=\fbox{-4}\\\\=-\frac{20\cdot2}{5\cdot2}=\boxed{-\frac{40}{10}}\\\\=-\frac{20\cdot3}{5\cdot3}=\boxed{-\frac{60}{15}}\\\vdots\)