(-2 целых 2/3- 2 целых 4/21):17/21+5,1

[tex]1)-2 \frac{2}{3} -2 \frac{4}{21} =-(2 \frac{14}{21} +2 \frac{4}{21} )=-4 \frac{18}{21} =-4 \frac{6}{7} \\ 2)-4 \frac{6}{7} : \frac{17}{21} =- \frac{34}{7} * \frac{21}{17} =-6 \\ 3)-6+5,1=-0,9[/tex]

(-2 2/3-2 4/21):17/21+5,1=-0,9
1)-8/3-46/21=(-56-46)/21=
-102/21
2)-102/21:17/21=
-102/21*21/17=-102/17=-6
3)-6+5,1=-0,9