-10 2/7:1 13/35+3 9/11:1 1/55 (пример)

[latex]-10\frac{2}{7}:1\frac{13}{35}+3\frac{9}{11}:1\frac{1}{55}=-\frac{72}{7}*\frac{35}{48}+\frac{42}{11}*\frac{55}{56}=-\frac{15}{2}+\frac{15}{4}=\frac{-30+15}{4}=\\=-\frac{15}{4}=-3\frac{3}{4}=-3,75[/latex]