Срочнооооо.............

Решите задачу:

$p+6.6-4\frac{11}{30} +k+2.7-6\frac{3}{5} -k=p+6.6+2.7-4\frac{11}{30} -6\frac{3}{5} =\\ \\ =p+9.3-4\frac{11}{30} -6\frac{18}{30} =p+9.3-10\frac{29}{30} =p+9\frac{3}{10} -10\frac{29}{30} =\\ \\ =p+9\frac{9}{30} -10\frac{29}{30}=p+\frac{279}{30}-\frac{329}{30} =p-\frac{50}{30} =p-1\frac{2}{3}\\ \\ \\ 1\frac{2}{3} -1\frac{2}{3} =0\\ \\ \\ -4-1\frac{2}{3} =-5\frac{2}{3}$