Question

The sum of 3 times a number and 12 is 20

Answer 1

`3x + 12 = 20`

`x = 2(2)/(3)`

Explanation:

Let x represent the unknown number.

3 times the unknown number is 3*x. = 3x

The sum of 3x and 12 is said to be 20.

This can be represented by the following equation:

`3x + 12 = 20` (sum means addition)

The equation of the statement given in the equation can be expressed as
`3x + 12 = 20`.

We can equally find the value of the unknown number using the equation, thus:

`3x + 12 = 20`

Subtract 12 from each side of the equation

`3x + 12 - 12 = 20 - 12`

`3x = 8`

Divide both sides by 3

`(3x)/(3) = (8)/(3)`

`x = 2(2)/(3)`