AlgebraEasyEquation for a number decreased by 6
Algebra practice question
Which equation states that a number n decreased by 6 is equal to 15?
- A. n − 6 = 15Correct
- B. 6 − n = 15
- C. n + 6 = 15
- D. 6n = 15
Answer: A. n − 6 = 15
"decreased by 6" means subtract 6 from n.
Why the other answers are wrong
- B. 6 − n = 15
- This subtracts n from 6.
- C. n + 6 = 15
- This increases n by 6.
- D. 6n = 15
- This multiplies n by 6.
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