(0,7 −11/30) · (−12/7) − (0,25 −11/24) :2 11/12= -0,5
1) 0,7 - 11/30 = 7/10 - 11/30 = 21/30 - 11/30 = 10/30 = 1/3
2) 1/3 * (-12/7) = -4/7
3) 0,25- 11/24 = 1/4 - 11/24 = 6/24 - 11/24 =-5/24
4) -5/24 : 2 целых 11/12 = - 5/24 * 12/ 35 = - 1/ 14
5) -4/7 - (-1/14) = -8/14 + 1/14 = -7/14 =-1/2=-0,5