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4-2 equations with variables on both sides

4-2 equations with variables on both sides. Miss battaglia – algebra 1 CP Objective: Solve equations with variables on both sides; identify equations that have no solution or are identities. Warm up. Find the values of a and b if and = 64. solve. 5 t – 8 = 9 t - 10. GOAL:

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4-2 equations with variables on both sides

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  1. 4-2 equations with variables on both sides Miss battaglia – algebra 1 CP Objective: Solve equations with variables on both sides; identify equations that have no solution or are identities.

  2. Warm up • Find the values of a and b if • and = 64

  3. solve • 5t – 8 = 9t - 10 GOAL: Get variables on the same side of the equation.

  4. Verify the solution • 5t – 8 = 9t– 10 where t =

  5. transportation • Mary and Jess are sisters. They left school at 3:00pm and biked home along the same path. Mary biked at a speed of 12 mi/h. Jess biked at 9 mi/h. Mary got home 15 min before Jess. How long did it take Mary to get home?

  6. Special types of equations • An equation has no solution if no value makes the equation true. • Solve

  7. Special types of equations • An equation that is true for every value of the variable is an identity. • Solve

  8. Mental math • Without writing the steps of a solution, tell whether the equation has one solution, no solution, or is an identity. • 9 + 5a = 5a – 1 b) 5a + 9 = 2a • c) 9 + 5a = 2a + 9 d) 9 + 5a = 5a + 9

  9. homework • Pg166-168 #8-13, 17, 20, 21, 25–27, 34, 33, 43

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