Bot an expression is shown. 3x - 18 - 3(2x + 4) select all the equivalent expressions. 3x - 18 - 6x - 12. 3x - 18 - 6x + 4. -3x - 30. -3x - 14. 9x - 6. -33x
The equivalent expressions are: 3x - 18 - 6x - 12 and 3x - 18 - 6x + 4.
To find the equivalent expressions, we need to simplify the given expression step-by-step.
1. Distribute the 3 in the expression -3(2x + 4):
-3 * 2x = -6x
-3 * 4 = -12
Now, the expression becomes: 3x - 18 - 6x - 12
2. Combine the like terms:
(3x - 6x) = -3x
(-18 - 12) = -30
The expression simplifies to: -3x - 30
So, the equivalent expression is: -3x - 30.
Therefore, the correct answer is: -3x - 30.