We have the following:
1.
[tex]-6\frac{4}{9}-3\frac{2}{9}-8\frac{2}{9}=-6\frac{2\cdot2}{9}-3\frac{2}{9}-8\frac{2}{9}=-12\frac{2}{9}-3\frac{2}{9}-8\frac{2}{9}=-23\frac{2}{9}=-17\frac{8}{9}[/tex]
2.
[tex]-12.48-(-2.99)-5.62=-12.48+2.99-5.62=-15.11[/tex]
3.
[tex]-19\frac{2}{9}-4\frac{1}{9}-(-3\frac{4}{9})=-19\frac{2}{9}-\frac{4}{9}+3\frac{4}{9}=-19\frac{8}{9}[/tex]
4.
[tex]-353.92-(-283.56)-131.29=-353.92+283.56-131.29=-201.65[/tex]
5.
[tex]83\frac{1}{5}-108\frac{2}{5}-(-99\frac{1}{5})=83\frac{1}{5}-108\frac{2}{5}+99\frac{1}{5}=74[/tex]
