[latex]a)-6frac{2}{5}-4frac{7}{10}=-6frac{4}{10}-4frac{7}{10}=-10frac{11}{10}=-11frac{1}{10}[/latex] [latex]b)-8frac{1}{6}+2frac{2}{3}=-8frac{1}{6}+2 frac{4}{6}=-7frac{7}{6}+2 frac{4}{6}=-5 frac{3}{6}=-5frac{1}{2}[/latex] [latex]c)4frac{3}{4}-1 frac{7}{8}=4frac{6}{8}-1frac{7}{8}=2frac{7}{8}[/latex] [latex]d)4frac{4}{9}+(-1frac{5}{9})=4frac{4}{9}-1frac{5}{9}=2 frac{8}{9}[/latex] [latex]e)4frac{4}{9}*(-3frac{3}{8})=frac{40}{9}*(-frac{27}{8})=-15 [/latex] [latex]f)-8frac{2}{3}:(-1 frac{4}{9})=-frac{26}{3}*(-frac{9}{13})=6[/latex] [latex]g)-6frac{1}{2}-2frac{2}{3}:(-frac{2}{9})=-6frac{1}{2}-frac{8}{3}*(-frac{9}{2}=-6frac{1}{2}+12=5 frac{1}{2}[/latex] [latex]h)-5frac{5}{9}:(5frac{5}{6}-10)=-5frac{5}{9}:(-4 frac{1}{6})=-frac{50}{9}*(-frac{6}{25})=frac{4}{3}=1 frac{1}{3}[/latex]
[latex]a) -6frac{2}{5}-4frac{7}{10}=-6,4-4,7=-11,1 \ [/latex][latex]b) -8frac{1}{6}+2frac{2}{3}= -frac{49}{6}+frac{8}{3}= -frac{49}{6}+frac{16}{6}=-frac{33}{6}=-5frac{3}{6}= -5frac{1}{2}\ c) 4frac{3}{4}-1frac{7}{8}=frac{19}{4}-frac{15}{8}=frac{38}{8}-frac{15}{8}=frac{23}{8}= 2frac{7}{8}\ d) 4frac{4}{9}+(-1frac{5}{9})= 4frac{4}{9}-1frac{5}{9}=frac{40}{9}-frac{14}{9}=frac{26}{9}=2frac{8}{9} \ e) 4frac{4}{9}*(-3frac{3}{8})=frac{40}{9}*frac{27}{8}=-15[/latex][latex]f) -8frac{2}{3}:(-1frac{4}{9})=-frac{26}{3}*(-frac{9}{13})=6\ g) -6,5-2frac{2}{3}:(-frac{2}{9})=-6,5-frac{8}{3}*(-frac{9}{2})= -6,5+12=5,5\ h) -5frac{5}{9}:(5frac{5}{6}-10)= -5frac{5}{9}:(-4frac{1}{6})= -frac{50}{9}*(-frac{6}{25})=frac{4}{3}=1frac{1}{3}\ [/latex]
