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12 cards from this deck
Exactly three separate equations
xxx, yyy, and zzz
Choose a variable; eliminate it from two equations
Eliminate same variable from different pair of equations
Solve the two-variable system
Substitute back to find third variable
Must eliminate the same variable in both steps
Rearrange them first before applying elimination
Label equations clearly and number your steps
Pick one with matching coefficients or simple multiples
Substitute answers back into all three original equations
Elimination method (or four-step elimination method)
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