How do you evaluate 8r - (5r + 4) >= -31?

1 Answer
Sep 16, 2017

rge-9

Explanation:

First, let's take a look at this part: -(5r+4)
-(5r+4) is the same as -(5r)-(4) which is -5r-4.
Let's add in the 8r. The whole equation would be:
8r-5r-4ge-31.

8r-5r=3r. Now, the equation would be:
3r-4ge-31.
Now we will add 4 to both sides.
3r-4color(blue)+color(blue)4ge-31color(blue)+color(blue)4
Then we simplify to 3rge-27. Divide both sides by 3 and you will get rge-9.

Answer: rge-9.