Answer:
42
Explanation:
To solve for d, we need to isolate d on one side of the equation.
First, let's simplify the left side by distributing 18 to the expression inside the parentheses:
18(d/3 - 6) = 18(d/3) - 18(6)
18(d/3 - 6) = 6d - 108
Now we have:
6d - 108 = 144
Let's add 108 to both sides to isolate 6d:
6d - 108 + 108 = 144 + 108
6d = 252
Finally, we can solve for d by dividing both sides by 6:
6d/6 = 252/6
d = 42
The solution is d = 42.