What are the answers to these problems

4c - 2d divided by c.
d + 6c divided by 4
c4 - d x 2. the number 4 in this problem is the power 4
40 - d2 + cd x 3. The number 2 in this problem is the power 2.
For each problem substitute c for 2 and d for 5

8 - 10 / 2 = 3
5 + 12 / 4 = 8
16 - 5 x 2 = 6
40 - 25 + 10 x 3= 45

Ask_Sean Says,

8 - 10 / 2 = 3
5 + 12 / 4 = 8
16 - 5 x 2 = 6
40 - 25 + 10 x 3= 45

(stole answer from above but I already knew how to do lol)