Question

How do you do 12 + 3x -x - 12

Answer 1

Hi there!

Answer:

=2x

*The answer must have a positive sign.*

Explanation:

Lesson: Using Properties to Simplify Expressions

First, you add/subtract by the numbers from left to right.

`3x-x=2x`

Then you use group like terms to change sides.

`2x+12-12`

Simplify and solve.

`12-12=0`

Final answer is 2x

I hope this helps you!

Have a nice day! :)

-Charlie

Answer 2

You need to combine like terms. So...

12 + 3x - x - 12 = 2x