1. Solving Two-Step Equations #34

2. Example 1 Solve each equation.   18 + 3x = 30

3. FYI Undo operations in the reverse of the Order of Operations. First undo addition or subtraction. Then undo multiplication or division. Helpful Hint

4. Example 2   Solve. Check the answer. – 2 = 1 x3x3

5. Example 3 Solve. Check the answer. = 6 x + 19 4

6. Example 4 Solve each equation. x – 16 = 9 3

7. Example 5 Solve. Check the answer. = 49 x - 9 10

8. Example 6 The rule for a certain function is to multiply the input by 5 and subtract 4. Find the input value when the output is 11.

9. Real-world Application 1   Kaia earned $425 last week. She wants to put $350 in the bank and buy some DVDs. Each DVD costs $25. Write a two-step equation to represent the situation. Then solve the equation. How many DVDs can she buy?

10. Real-world Application 2 Nancy saved $87 of the money she made babysitting. She wants to buy CDs that cost $15 each, along with a set of headphones that costs $12. How many CDs can she buy?