6a-2(3a-1)

To simplify the expression 6a - 2(3a - 1), you need to distribute the -2 across the terms inside the parentheses, and then combine like terms.

Here's the step-by-step simplification:

1. Distribute the -2 to both terms inside the parentheses: 6a - 2 * 3a + 2 * 1

2. Multiply -2 with each term inside the parentheses: 6a - 6a + 2

3. Now, combine like terms. The terms 6a and -6a will cancel each other out: 0a + 2

Simplified, the expression is just: 2

The a terms have cancelled each other out, leaving you with the constant 2.