1. Holt McDougal Algebra 1 1-4 Solving Two-Step and Multi-Step Equations 1-4 Solving Two-Step and Multi-Step Equations Holt Algebra 1 Warm Up Warm Up Lesson Quiz Lesson Quiz Lesson Presentation Lesson Presentation Holt McDougal Algebra 1

2. 1-4 Solving Two-Step and Multi-Step Equations Warm Up Evaluate each expression. 1. 9 –3(–2) 2. 3(–5 + 7) 3. 4. 26 – 4(7 – 5) Simplify each expression. 5. 10c + c 6. 8.2b + 3.8b – 12b 7. 5m + 2(2m – 7) 8. 6x – (2x + 5) 15 6 18 –4 11c 0 9m – 14 4x – 5

3. Holt McDougal Algebra 1 1-4 Solving Two-Step and Multi-Step Equations Solve equations in one variable that contain more than one operation. Objective

4. Holt McDougal Algebra 1 1-4 Solving Two-Step and Multi-Step Equations Solve 18 = 4a + 10. Example 1A: Solving Two-Step Equations

5. Holt McDougal Algebra 1 1-4 Solving Two-Step and Multi-Step Equations Solve 5t – 2 = –32. Example 1B: Solving Two-Step Equations

6. Holt McDougal Algebra 1 1-4 Solving Two-Step and Multi-Step Equations Solve –4 + 7x = 3. Check it Out! Example 1a

7. Holt McDougal Algebra 1 1-4 Solving Two-Step and Multi-Step Equations Solve 1.5 = 1.2y – 5.7. Check it Out! Example 1b

8. Holt McDougal Algebra 1 1-4 Solving Two-Step and Multi-Step Equations Solve. Check it Out! Example 1c

9. Holt McDougal Algebra 1 1-4 Solving Two-Step and Multi-Step Equations Solve Example 2A: Solving Two-Step Equations That Contain Fractions

10. Holt McDougal Algebra 1 1-4 Solving Two-Step and Multi-Step Equations Solve Example 2B: Solving Two-Step Equations That Contain Fractions

11. Holt McDougal Algebra 1 1-4 Solving Two-Step and Multi-Step Equations Solve Check It Out! Example 2a

12. Holt McDougal Algebra 1 1-4 Solving Two-Step and Multi-Step Equations Solve Check It Out! Example 2b

13. Holt McDougal Algebra 1 1-4 Solving Two-Step and Multi-Step Equations Equations that are more complicated may have to be simplified before they can be solved. You may have to use the Distributive Property or combine like terms before you begin using inverse operations.

14. Holt McDougal Algebra 1 1-4 Solving Two-Step and Multi-Step Equations Solve 8x – 21 + 5x = –15. Example 3A: Simplifying Before Solving Equations

15. Holt McDougal Algebra 1 1-4 Solving Two-Step and Multi-Step Equations Solve 10y – (4y + 8) = –20 Example 3B: Simplifying Before Solving Equations

16. Holt McDougal Algebra 1 1-4 Solving Two-Step and Multi-Step Equations Solve 2a + 3 – 8a = 8. Check It Out! Example 3a

17. Holt McDougal Algebra 1 1-4 Solving Two-Step and Multi-Step Equations Solve –2(3 – d) = 4 Check It Out! Example 3b

18. Holt McDougal Algebra 1 1-4 Solving Two-Step and Multi-Step Equations Solve 4(x – 2) + 2x = 40 Check It Out! Example 3c