а = -1, в = -1
\[\frac{|a-b|}{|a|+|b|} = \frac{|-1-(-1)|}{|-1|+|-1|} = \frac{|-1+1|}{1+1} = \frac{0}{2} = 0\]
а = -3, в = -2
\[\frac{|a-b|}{|a|+|b|} = \frac{|-3-(-2)|}{|-3|+|-2|} = \frac{|-3+2|}{3+2} = \frac{|-1|}{5} = \frac{1}{5}\]
Ответ: 1) 0, 2) 1/5