441,963 views
14 votes
14 votes
If 1 is added to a number and the sum is tripled, the result is 5 more than the number. Find the number

User ChallengeAccepted
by
3.0k points

1 Answer

10 votes
10 votes

Answer;


n=1

Explanation;

Here, we want to get a number

Since the number is not known at the moment, we can start by identifying the number with an a;phabet

Let us call this n

If 1 is added to the number

mathematical representation;


1+n

And the sum is tripled;


3(1+n)

The result is 5 more than the number

5 more than the number is simply;


5+n

So, we equate this to what we had initially as follows;


5+n=3(1+n)

We can now solve this equation for n


\begin{gathered} 5+n=3+3n \\ 5-3=3n-n \\ 2n=2 \\ n=(2)/(2) \\ n=1 \end{gathered}

User Steven Robbins
by
3.1k points