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Solving a System of Equations with Two Unknowns
Distance = Rate x Time Problems
Mixture Problems
Blinders
Solving a System of Equations with Three Unknowns
  SOLVING A SYSTEM OF EQUATIONS WITH TWO UNKNOWNS
Now let’s solve for x and y by addition/subtraction (elimination method).
  • 2x + 3y = 18
  • x – y = –1
Multiply the bottom equation by -2 so that when you add the two equations the x-term will drop out to get the equation shown.
Elimination method
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