Найдите значения выражения; 6 5/ 2/3)+(-2 3/4); 4 1/8-6 2/9+(-3 1/ 3/4)

 6 5/12-(-4 2/3)+(-2 3/4)=6 5/12+4 2/3-2 3/4=77/12+14/3-11/4=77/12+56/12-33/12=100/12=25/3=8 1/3

 4 1/8-6 2/9+(-3 1/6)-(-5 3/4)=4 1/8-6 2/9-3 1/6+5 3/4=33/8-56/9-19/6+23/4=297/72-448/72-228/72+414/72=35/72