Question

How can i do this one ☝️

Answer 1

Answer:

20

Step-by-step explanation:

-4 = $\frac{r}{20}$ - 5

⇒ -4 + 5 = $\frac{r}{20}$

⇒ 1 = $\frac{r}{20}$

⇒ 1 × 20 = r

⇒ 20 = r

Answer 2

Hey there!

Let's start by adding 5 to both sides. This eliminates the -5.  

1 = r/20

Now to solve for r we can multiply both sides by 20.

20 = r

Check

-4 = 20/20 - 5

-4 = 1 - 5

-4 = -4

Your answer is r = 20.

Hope this helps!