\(\dfrac{-15}{17}\):\(\dfrac{25}{34}\)=\(\dfrac{-15}{17}\)x\(\dfrac{34}{25}\)=\(\dfrac{-510}{452}\)=\(\dfrac{-255}{226}\)
-48:(\(\dfrac{-24}{5}\))=-48x(\(\dfrac{5}{-24}\))=\(\dfrac{-240}{-24}\)=10
\(\dfrac{-30}{7}\):(\(\dfrac{-5}{-14}\))=\(\dfrac{-30}{7}\)x(\(\dfrac{-14}{-5}\))=\(\dfrac{420}{-35}\)