Select all of the expressions that are equivalent to 3x + 18

3(x + 6) and 4x + 18 - x

Step-by-step explanation:

Let's solve each option to see whether we would get 3x + 18:

✔️2x + 9 + 2x + 9

Add like terms

2x + 2x + 9 + 9

4x + 18

✔️3(x + 6)

3*x + 3*6

3x + 18 (it is an equivalent)

✔️4x + 18 - x

Add like terms

4x - x + 18

3x + 18 (it is an equivalent)

✔️2(4x + 9)

8x + 18

Therefore, the expressions 3(x + 6) and 4x + 18 - x are equivalent to 3x + 18