Question

Help. How to solve9d + n = 5r

Answer 1

We want to rewrite the following equation

$9d+n=5r$

With d as a function of the other terms. Let's start by subtracting n from both sides.

$\begin{gathered} 9d+n-n=5r-n \\ 9d=5r-n \end{gathered}$

Now, let's divide both sides by 9.

$\begin{gathered} \frac{9d}{9}=\frac{5r-n}{9} \\ \\ d=\frac{5r-n}{9} \end{gathered}$

And this is our final answer.