Answer:
d = 0.
Step-by-step explanation:
First, use the distributive property and distribute the 5.
The equation is now 20d + 40 = 40.
Subtract 40 from both sides to isolate the variable.
The equation is now 20d = 0.
Now you're thinking, this can't be possible! But really, 0 / 20 is possible. The answer is d = 0.
