Three times a certain number is added to 5 and the result is 20?
What's the number?

The number is 5

Step-by-step explanation:

First of all we have to convert the given scenario in mathematical or algebraic expression.

Let x be the number

Then according to given statement, the equation will be:

"Three times a certain number"

"is added to 5"

"the result is 20"

Using Subtraction property of Equality

Using division property of equality

Hence,

The number is 5