Question

Joan is thinking of a number. She adds 5 and multiplies it by 4. She then subtracts n of her original number and divides by 20. She wants the answer to always be 1. What is the value of n?​

Answer 1

Answer:

5

Step-by-step explanation:

1. (4n+5)-n/20=1
2. cross multiply:(4n+5)-n=20
3. 4n+5=20+n
4. 4n-n=20-5
5. 3n=15
6. Divide both sides by coefficient of n
7. n=5