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Solving Systems of Linear Equations in Study Time

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Jill, Karen, and Betsy studied a total of 93 hours last week. Jill's and Karen's study time totaled only one-half as much as Betsy's. If Jill studied 3 hours more than Karen, then how many hours did each one of the girls spend studying?

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The solution shows how to set up and solve the system of linear equations for this word problem.

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