Question

Please help, I’m so confused!

Answer 1

Answer:

$a = c/(d-r)$

Step-by-step explanation:

To solve for $a$, first multiply by $a$ on both sides to get this:

$c = da - ra$

Now, you can factor out an $a$ from the right side to get this:

$c = a(d - r)$

Now divide by $d - r$ in order to solve for $a$ and you get:

$a = c/(d-r)$