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Solving Two-Step Equations

Solving Two-Step Equations. #34. Example 1. Solve each equation. 18 + 3 x = 30. Helpful Hint. Undo operations in the reverse of the Order of Operations. First undo addition or subtraction. Then undo multiplication or division. FYI. Example 2. Solve. Check the answer. x 3. – 2 = 1.

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Solving Two-Step Equations

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  1. Solving Two-Step Equations #34

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

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

  4. Example 2 • Solve. Check the answer. x 3 – 2 = 1

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

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

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

  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?

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