Question

A number is multiplied by 9 , and that product is added 3. The sum is equal to the product of 3 and 7 . Find the number.

Answer 1

ANSWER:
the number is 2

Answer 2

The unknown number is 2.

Explanation:

Let x represent the unknown number.

It is multiplied by 9 then added to 3. Hence, it can be represented by the expression:

`9x + 3`

The sum is equal to the product of 3 and 7, or 21. Therefore:

`9x + 3 = 21`

Solve for x. Subtract 3 from both sides:

`9x = 18`

And divide both sides by 2. Hence:

`x = 2`

In conclusion, the unknown number is 2.