To evaluate the expression 6c - d, in case c = 2 and d = 10, we can proceed as follows:
We need to substitute the value of c and d in the expression, that is
c = 2, d = 10
Then
6c - d
6 x (2) - 10
12 - 10 = 2
So, the evaluation of the expression 6c - d when c =2 and d = 10 is 2.