Answer:
d =
Step-by-step explanation:
1) To solve for d, isolate it in the equation. So, to get rid of the with the d, add to both sides.
Thus, d = .
Answer: It is the quotient of 21 times and number and 8.
It's a quadratic equation in disguise. If you let , then , and we can rewrite the equation as
Solve for however you like; we get and .
But we want to solve for , so we have
ty!