Answer:
Step-by-step explanation:
[tex]2\frac{1}{5}dividedby\frac{-1}{10}=2\frac{1}{5}*\frac{-10}{1}\\\\=\frac{11}{5}*\frac{-10}{1}\\\\=11*-2=-22\\[/tex]
Keep the first fraction, change division to multiplication and find the reciprocal(multiplicative inverse) of the second fraction
[tex]\frac{11}{50}dividedby\frac{11}{50}=\frac{11}{50}*\frac{50}{11}\\\\ =1[/tex]