Find the value of a,b,c in the equation below

see below

Step-by-step explanation:

      = -6 4/9 - 3 2/9 = -9 2/3

      = -9 2/3 - 8 2/9

      = -17 8/9

      = -12.48 + 2.99 + 5.62

      = -15.11

      = -173/9 - 37/9 + 31/9

      = -179/9

      = -19 8/9

      = -353.92 + 283.56 - 131.29

      = - 201.65

      = 416 - 542 + 496

                       5

      = 74