Question

Two times the sum of a number and five is 20

Answer 1

x = 5

Explanation:

Let the unknown number be x

`2(x + 5) = 20`

Expand

`2(x + 5) = 2x + 10 \\ 2x + 10 = 20`

Collect like terms and simplify

`2x = 20 - 10 \\ 2x = 10`

Divide both sides of the equation by 2

`(2x)/( 2) = (10)/(2) \\ x = 5`

Answer 2

Answer: The number is 5

Explanation:

I assume you are asking for finding the number.

For this kind of question, just accord to the statements and write an equation.

--------------------------------------------------------------------

Let x = the number

2(x+5)=20

x+5=10

x=5