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The first step in simplifying the expression \((2x³- 12x² + 5x − 3) - (7x³ + 10x² - 3x + 20)\) is to **distribute the negative to the second set of parentheses**.
This means you will change the signs of all the terms in the second set of parentheses before combining like terms. So, the correct answer is:
**Distribute the negative to the second set of parenthesis.**