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Solving Two-Step Equations

#41. Solving Two-Step Equations. 1: Solving Two-Step Equations. 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. Example 2 : Solving Two-Step Equations.

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Solving Two-Step Equations

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  1. #41 Solving Two-Step Equations

  2. 1: Solving Two-Step Equations 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.

  4. Example 2: Solving Two-Step Equations Solve. Check the answer. x 3 – 2 = 1

  5. Example 3: Solving Two-Step Equations Solve. Check the answer. x + 19 4 = 6

  6. Example 4 Solve each equation . 7 x – 5 = 23

  7. Example 5 Solve each equation . x – 16 = 9 3

  8. Example 6 Solve. Check the answer. x - 9 10 = 49

  9. Example 7: Consumer Math Application 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?

  10. Example 8 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?

  11. Example 9: Working Backward with Function Rules 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.

  12. Example 10 The rule for a certain function is to multiply the input by 2 and subtract 8. Find the input value when the output is 3.

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