Question

The sum of a number and three is five. Find the number.The number is ?

Answer 1

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:

`=`

Let be "x" the unknown number.

"The sum of a number and three" can be represented with this expression:

`x+3`

Therefore, the equation is:

`x+3=5`

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:

`\begin{gathered} x+3-(3)=5-(3) \\ x=2 \end{gathered}`

Hence, the answer is: The number is 2.