simplify

3\left(x-6\right)-6x

3(x-6)-6x can be simplified as follows:

3x-18-6x

Combining like terms, we have:

(-3x)-18

To simplify the expression 3(x - 6) - 6x, we can follow these steps:

1. Distribute the 3 to the terms inside the parentheses:
3 * x = 3x
3 * -6 = -18
So, the expression becomes: 3x - 18 - 6x

2. Combine like terms:
When we have x terms, we can combine them. In this case, we have 3x and -6x:
3x - 6x = -3x

So, the expression simplifies to: -3x - 18

Therefore, the simplified form of 3(x - 6) - 6x is -3x - 18.

To simplify the expression 3(x-6)-6x, we will follow the order of operations (PEMDAS).

Step 1: Simplify inside the parentheses.
In the expression, we have (x-6). To simplify this, we distribute the 3 to both terms inside the parentheses:
3 * x - 3 * 6 = 3x - 18

Step 2: Simplify the expression after distributing.
Now, we can rewrite our original expression as:
3x - 18 - 6x

Step 3: Combine like terms.
In 3x - 18 - 6x, we have two terms with x: 3x and -6x. To simplify, we can combine these terms by subtracting 6x from 3x:
(3x - 6x) - 18 = -3x - 18

So, the simplified form of 3(x-6)-6x is -3x - 18.