Answer:
d = 14
Step-by-step explanation:
So what we need to do is divide each term in 3(d+8) = 66 by 3
3(d+8) / 3 = 66 / 3
this cancels the 3 on the left side and then we are left with
d+8 = 22
now we need to get D by itself by subtracting 8 by both sides.
d+8-8 = 22 - 8
D = 14
