Solving 3 variable systems of equations by substitution

Lessons

• Introduction
  How to Solve Three Variable Systems of Equations?

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• 1.
  Solving Three Variable Systems of Equations – (Easy)

  Solve the following system of equations by substitution:

  $2x + 3y + 4z = 0$

  $2y + 3z = 23$

  $z = 5$

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• 2.
  Solving Three Variable Systems of Equations – (Medium)

  Solve the following system of equations by substitution:

  $3x - 5y + z = 0$

  $x - 2y - z = 0$

  $z = -2$

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• 3.
  Solving Three Variable Systems of Equations – (Hard)

  Solve the following system of equations by substitution:

  $15x + 7y - 6z = -9$

  $5x - 3y + 6z = 13$

  $z = 4$

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