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example 1

example 1. Solution by Elimination. Chapter 7.1. Solve the system. 2009 PBLPathways. Solve the system. Solve the system. If necessary, interchange two equations or use multiplication to make the coefficient of x in the first equation a 1. E1  E2. Solve the system.

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example 1

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  1. example 1 Solution by Elimination Chapter 7.1 Solve the system 2009 PBLPathways

  2. Solve the system

  3. Solve the system If necessary, interchange two equations or use multiplication to make the coefficient of x in the first equation a 1. E1  E2

  4. Solve the system Add a multiple of the first equation to each of the following equations so that the coefficients of x in the second and third equations become 0. -2 R1 + R2  R2

  5. Solve the system Add a multiple of the first equation to each of the following equations so that the coefficients of x in the second and third equations become 0. -2 E1 + E2  E2

  6. Solve the system Add a multiple of the first equation to each of the following equations so that the coefficients of x in the second and third equations become 0. -2 E1 + E2  E2

  7. Solve the system Add a multiple of the first equation to each of the following equations so that the coefficients of x in the second and third equations become 0. -3 R1 + R3  R3

  8. Solve the system Add a multiple of the first equation to each of the following equations so that the coefficients of x in the second and third equations become 0. -3 E1 + E3  E3

  9. Solve the system Add a multiple of the first equation to each of the following equations so that the coefficients of x in the second and third equations become 0. -3 E1 + E3  E3

  10. Solve the system Add a multiple of the first equation to each of the following equations so that the coefficients of x in the second and third equations become 0. -3 E1 + E3  E3

  11. Solve the system Multiply (or divide) both sides of the second equation by a number that makes the coefficient of y in the second equation equal to 1. -1 R2  R2

  12. Solve the system Multiply (or divide) both sides of the second equation by a number that makes the coefficient of y in the second equation equal to 1. -1 E2  E2

  13. Solve the system Multiply (or divide) both sides of the second equation by a number that makes the coefficient of y in the second equation equal to 1. -1 E2  E2

  14. Solve the system Add a multiple of the (new) second equation to the (new) third equation so that the coefficient of y in the newest third equation becomes 0. -4 R2 + R3  R3

  15. Solve the system Add a multiple of the (new) second equation to the (new) third equation so that the coefficient of y in the newest third equation becomes 0. -4 E2 + E3  E3

  16. Solve the system Add a multiple of the (new) second equation to the (new) third equation so that the coefficient of y in the newest third equation becomes 0. -4 E2 + E3  E3

  17. Solve the system Add a multiple of the (new) second equation to the (new) third equation so that the coefficient of y in the newest third equation becomes 0. -4 E2 + E3  E3

  18. Solve the system Multiply (or divide) both sides of the third equation by a number that makes the coefficient of z in the third equation equal to 1. This gives the solution for z in the system of equations. E3  E3

  19. Solve the system Multiply (or divide) both sides of the third equation by a number that makes the coefficient of z in the third equation equal to 1. This gives the solution for z in the system of equations. E3  E3

  20. Solve the system Use the solution for z to solve for y in the second equation. Then substitute values for y and z to solve for x in the first equation.

  21. Solve the system Use the solution for z to solve for y in the second equation. Then substitute values for y and z to solve for x in the first equation.

  22. Solve the system Use the solution for z to solve for y in the second equation. Then substitute values for y and z to solve for x in the first equation.

  23. Solve the system Use the solution for z to solve for y in the second equation. Then substitute values for y and z to solve for x in the first equation.

  24. Solve the system Use the solution for z to solve for y in the second equation. Then substitute values for y and z to solve for x in the first equation.

  25. Solve the system Use the solution for z to solve for y in the second equation. Then substitute values for y and z to solve for x in the first equation.

  26. Solve the system Use the solution for z to solve for y in the second equation. Then substitute values for y and z to solve for x in the first equation.

  27. Solve the system Use the solution for z to solve for y in the second equation. Then substitute values for y and z to solve for x in the first equation.

  28. Solve the system Use the solution for z to solve for y in the second equation. Then substitute values for y and z to solve for x in the first equation.

  29. Solve the system Does the solution solve the system?

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