How do you write the inequality and solve given "twice

London Ware

London Ware

Answered question

2022-05-11

How do you write the inequality and solve given "twice a number increased by 3 is less than the number decreased by 4"?

Answer & Explanation

empatteMattmkezo

empatteMattmkezo

Beginner2022-05-12Added 22 answers

Step 1
To write the inequality we will start by defining "a number" as n.
Then, "twice a number" can be written as 2n.
"increased by 3" becomes: 2 n + 3
"is less than" turns it into" 2 n + 3 <
"the number decreased by 4" is: n - 4
Putting this together gives the inequality:
2 n + 3 < n - 4
To solve, first subtract 3 and n from each side of the inequality to solve for n while keeping the inequality balanced:
- n + 2 n + 3 - 3 < - n + n - 4 - 3
- 1 n + 2 n + 0 < 0 - 7

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