How do you write an inequality and solve given "twice

aligass2004yi

aligass2004yi

Answered question

2022-06-08

How do you write an inequality and solve given "twice a number is more than the sum of that number and 9"?

Answer & Explanation

Christina Ward

Christina Ward

Beginner2022-06-09Added 19 answers

Step 1
First, let's call the number we are looking for n.
Now, we can write "twice a number" as 2n
And, we can write "the sum of that number and 9" as n + 9
The first "is more than" so we can write the inequality as:
2 n > n + 9
To solve, subtract n from each side of the inequality to find n while keeping the inequality balanced:
2 n - n > n - n + 9
2 n - 1 n > 0 + 9
( 2 - 1 ) n > 9
1 n > 9
n > 9

Do you have a similar question?

Recalculate according to your conditions!

Ask your question.
Get an expert answer.

Let our experts help you. Answer in as fast as 15 minutes.

Didn't find what you were looking for?