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15 cards from this deck
Systems of 2+ equations sharing same variables that must be solved together
Translating word problems into mathematical equations
Identify the unknowns (decide variables to use)
xxx & yyy values satisfying both equations
A straight line
No solution
Infinite solutions
x−5x - 5x−5 years old
x+3x + 3x+3 years old
2(extlength+extwidth)2( ext{length} + ext{width})2(extlength+extwidth)
Keep units consistent (cents OR euros)
Mixing up which variable represents which quantity
Visual representation makes solution clear
May not give perfectly accurate answers
Two different pieces of information
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