Question

A certain number was divided my 3; 3 was added to to the result. the final answer is 8. what is the number?​

Answer 1

Answer: The number is 15.

Step-by-step explanation: We are given a certain number we don't know about. Since it's value is unknown it is a variable. We'll call this variable "x". That number, x, is divided by 3, and then 3 was added to x to make 8. So then if x =  15, then dividing it by 3 would make 5, and adding 3 to that would make 8.

Another way to solve this, or check your work, is to work the problem out in reverse. Starting with the number 8, subtract 3 and then multiply that number by 3. This will give you the number 15. Which shows that the answer is correct.

$(\frac{15}{3}) + 3 = x$

$5+3= x$

$8=x$

$x=8$

                                                                                                                                               

$3(8-3) = x$

$3(5) = x$

or

$24 - 9 = x$

$15 = x$

$x=15$

Thus the number is 15. Hope this helps, and have a great day!

Answer 2

Answer:

the number is 15

Step-by-step explanation:

if you fix it into the equation, you'll get 15 divided by 3 which is 5 then plus 3 which will give you 8