SOLUTION: Susan solved one system of equations using substitution and reached an answer of 0 = 20 when solving for the first variable. What does this mean?

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Question 407114: Susan solved one system of equations using substitution and reached an answer of 0 = 20 when solving for the first variable. What does this mean?
Answer by richard1234(7193)   (Show Source): You can put this solution on YOUR website!
Probably means that the first variable was incorrect, or that the system of equations has no solutions.
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