122,930 views
42 votes
42 votes
Three times a number plus 5 is 23. What is the number?

User Ty Morton
by
2.7k points

1 Answer

20 votes
20 votes

Let the unknown be "x".

3 times a number plus 5 IS 23.

3 times a number will be "3x"

plus 5 is 23 means we will add 5 to it and equate to 23.

So, final equation:


3x+5=23

We can now solve for x using algebra. Shown below:


\begin{gathered} 3x+5=23 \\ 3x=23-5 \\ 3x=18 \\ x=(18)/(3) \\ x=6 \end{gathered}

The number is 6

User Hkoof
by
2.7k points
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.