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Module 3 Pp

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Module 3 Pp

  1. 2. Solving Equations- Subtraction Property of Equality <ul><li>a + 12 = 18 </li></ul>Our goal in solving equations is to isolate the variable.
  2. 3. <ul><li>a + 12 = 18 </li></ul>We always use opposite operations when solving equations The opposite of adding is subtracting. Solving Equations- Subtraction Property of Equality
  3. 4. Solving Equations-Addition <ul><li>a + 12 = 18 </li></ul><ul><li>a + 12 – 12 = 18 -12 </li></ul>Solving Equations- Subtraction Property of Equality We always use opposite operations when solving equations The opposite of adding is subtracting.
  4. 5. Solving Equations-Addition <ul><li>a + 12 = 18 </li></ul><ul><li>a + 12 – 12 = 18 -12 </li></ul>Solving Equations- Subtraction Property of Equality Balanced the equation by subtracting 12 from both sides of the equal sign.
  5. 6. <ul><li>a + 12 = 18 </li></ul><ul><li>a + 12 – 12 = 18 -12 </li></ul><ul><li>a + 0 = 6 </li></ul>Solving Equations- Subtraction Property of Equality
  6. 7. Solving Equations- Subtraction Property of Equality a + 12 = 18 a + 12 – 12 = 18 -12 a + 0 = 6 a = 6
  7. 8. Solving Equations- Addition Property of Equality <ul><li>b - 5 = 8 </li></ul>Our goal in solving equations is to isolate the variable.
  8. 9. <ul><li>b - 5= 8 </li></ul>We always use opposite operations when solving equations Solving Equations- Addition Property of Equality
  9. 10. <ul><li>b - 5 = 8 </li></ul>We always use opposite operations when solving equations Solving Equations- Addition Property of Equality The opposite of subtracting is adding.
  10. 11. Solving Equations-Addition <ul><li>b - 5 = 8 </li></ul><ul><li>b - 5 + 5 = 8 + 5 </li></ul>Solving Equations- Addition Property of Equality We always use opposite operations when solving equations The opposite of subtracting is adding.
  11. 12. Solving Equations-Addition <ul><li>b - 5 = 8 </li></ul><ul><li>b - 5 + 5 = 8 + 5 </li></ul>Solving Equations- Addition Property of Equality Balanced the equation by adding 5 to both sides of the equal sign.
  12. 13. <ul><li>b - 5 = 8 </li></ul><ul><li>b -5 + 5 = 8 + 5 </li></ul><ul><li>b + 0 = 13 </li></ul>Solving Equations- Addition Property of Equality
  13. 14. Solving Equations- Addition Property of Equality b - 5 = 8 b - 5 + 5 = 8 + 5 b + 0 = 13 b = 13

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