d = 4
Steps:
-6d=-24
To find out d we must divide each side by -6:
-6 / -6 cancels out -6 and we are left with d
-24 / -6 = 4
d = 4
We can then plug it back into the problem to see if its correct.
-6(4)=-24
This is correct.
Hope this helps you! (:
-PsychoChicken4040