a)-24\over7-71\over2 = b) 42\over3-71\over4 = c) -5\over6* -4\over15)= d) 15\over9/(-21\over3) = Dam 6.

a)-24\over7-71\over2 =-28\over14-77\over14 = -915\over14 = -101\over14

a)-24\over7-71\over2 =-28\over14-77\over14 = -915\over14 = -101\over14

-2 4/7 -7 1/2= -2 8/14- 7 7/14= -9 15/14 = -10 1/14

4 2/3 - 7 1/4= 4 8/12- 7 3/12= 4 8/12 - 6 15/12= -2 7/12