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Solving Two Step Equations

Solving Two Step Equations. 7.1. What is being done to the variable?. 2x +1 =5 X is being multiplied by 2 and added to 1. What is being done to the variable?. Y is being divided by -7 and added by -9. Goal:.

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Solving Two Step Equations

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  1. Solving Two Step Equations 7.1

  2. What is being done to the variable? • 2x +1 =5 • X is being multiplied by 2 and added to 1

  3. What is being done to the variable? • Y is being divided by -7 and added by -9

  4. Goal: • To get x all by itself on one side of the equation. You do this by unwrapping the variable.

  5. Unwrap the variable • By doing the opposite operation in the reverse order

  6. What are the opposite operations in the reverse order? 2x +1 =5 What is being done to x : multiplied by 2 and added to 1 Opposite operation in reverse order: subtract 1 and divide by 2

  7. What are the opposite operations in the reverse order? • What is being done to y: Dividing by -7 and adding a - 9 • Opposite operation in reverse order: subtract a -9 or add a 9 and multiply by-7

  8. Steps • Add or subtract first • Multiply or divide second

  9. Solve : -a + 6=8

  10. -6t+ (-3)= 14

  11. 12-11a=45

  12. Homework • Page 338 (11-34) all

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