from a certain number 3 is subtracted the result is divided by 2 the final answer is 5 what is the number

Question

From a certain number 3 is subtracted.The result is divided by 2.The final answer is 5. What is the number?.

 

 

 

Answer 1

n = certain number

n - 3,  3 is subtracted

(n - 3)/2,  result divided by 2

(n - 3)/2 = 5

 

Multiply both sides by 2

n - 3 = 10

 

Add 3 to both sides

n = 13

 

Check:

(13 - 3) / 2

10 / 2

5