Question

How do you evaluate the algebraic expression `3(x- 3)+ 4` for x=7?

Answer 1

`16`

Explanation:

To evaluate this expression you need to substitute `7` everywhere there is an `x` to give:

`3(7 - 3) + 4`

Then doing the basic arithmetic gives:

`3(4) + 4`

`12 + 4`

`16`