Question

Three times a number plus 3 is 24 . Find the number

Answer 1

x = 7

Explanation:

Let the unknown number be x

`3 * x + 3 = 24 \\ 3x + 3 = 24`

Collect like terms and simplify

`3x = 24 - 3 \\ 3x = 21`

Divide both sides of the equation by 3

`(3x)/(3) = (21)/(3)`

Simplify

`x = 7`

Answer 2

Let's call the number we don't know n.

Since three times a number plus 3 is 24,

we can translate this to 3n + 3 = 24.

Solving from here, we subtract 3 from both sides to get 3n = 21.

Now we can divide both sides of the equation by 3 and we have n = 7.

So our number is 7.