SOLUTION: From a ceartain number 3 is subtracted the result is divided by 2 the final answer is 5 find the number

Algebra ->  Numeric Fractions Calculators, Lesson and Practice -> SOLUTION: From a ceartain number 3 is subtracted the result is divided by 2 the final answer is 5 find the number      Log On


   

Question 1210383: From a ceartain number 3 is subtracted the result is divided by 2 the final answer is 5 find the number
Found 2 solutions by josgarithmetic, ikleyn:
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
Say let certain number be x.

Read straight from the description.
%28x-3%29%2F2=5
Now just solve that.

Answer by ikleyn(52777) About Me  (Show Source):
You can put this solution on YOUR website!
.
From a highlight%28cross%28ceartain%29%29 certain number 3 is subtracted highlight%28and%29 the result is divided by 2.
The final answer is 5. Find the number.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 

        One way to solve


One way to solve is the backward method.


From the problem, before dividing by 2, the number was 5*2 = 10.


Hence, the original number was 10+3 = 13.    <<<---===  ANSWER



        Another way to solve


Another way to solve is via creating and solving an equation.


Let x be the original number.

Then write an equation as you read the problem

    %28x-3%29%2F2 = 5.


To solve, multiply both sides by 2

    x - 3 = 10.


Now add  '3'  to both sides and get the  ANSWER   x = 13.

Solved.

Both ways produce the same answer.

You may check that the answer is correct by making calculations with '13', described in the problem.