Answer:
9x-9
Step-by-step explanation:
When multiplying a number into a set of numbers contained with parenthesis, it's pretty simple. Here's an easy way to do it.
3(3x-3)
3 is the number outside the parenthesis. Multiply each individual number/variable inside the parenthesis by 3.
9x-9
And thus, our answer is 9x-9
