Given the description "The sum of a number and three is five", you need to remember the following:
- A Sum is the result of an Addition.
-The verb "is" indicates that it is an equation and, therefore, you must use this sign:
[tex]=[/tex]Let be "x" the unknown number.
"The sum of a number and three" can be represented with this expression:
[tex]x+3[/tex]Therefore, the equation is:
[tex]x+3=5[/tex]In order to find the value of "x", you need to apply the Subtraction Property of Equality by subtracting 3 from both sides of the equation:
[tex]\begin{gathered} x+3-(3)=5-(3) \\ x=2 \end{gathered}[/tex]Hence, the answer is: The number is 2.
