−83−(−85)−(−21)=
\( -\frac{3}{8}-(-\frac{5}{8})-(-\frac{1}{2})= \)
\( -\frac{1}{4}-(-\frac{1}{8})+\frac{1}{6}= \)
\( -\frac{14}{7}+(-3)-\frac{1}{2}-(-\frac{1}{4})= \)
\( -\frac{4}{16}-(-\frac{3}{8})+\frac{2}{8}+(-\frac{1}{4})= \)
\( -\frac{1}{25}+(-\frac{1}{5})-(-\frac{19}{25})= \)
\( -3+(-\frac{1}{2})+(\frac{3}{8})+\frac{5}{8}= \)
\( -\frac{1}{2}+\frac{3}{4}+-\frac{1}{5}+(-\frac{4}{5})= \)
\( -\frac{4}{9}+5+(-2)+\frac{5}{9}= \)
\( -5+-\frac{1}{2}+10+(-\frac{3}{4})= \)