Answer :

AL2006

The sum of 'k' and '7' is ' k + 7 '.

Five-sixths of that sum is ' (5/6)(k + 7) '.

The product of '6' and 'c' is '6c' .

"Five sixths of the sum of 'k' and '7' " minus the of '6'and 'c' is

                  (5/6)(k + 7) - 6c.