Evaluating expressions with unknown variables (K-A)

S#	Lecture	Course	Institute	Instructor	Discipline
1	Worked example: evaluating expressions using structure (K-A)	Evaluating expressions with unknown variables (K-A)	Khan Academy		Basic and Health Sciences
2	Worked example: evaluating expressions using structure (more examples) (K-A)	Evaluating expressions with unknown variables (K-A)	Khan Academy		Basic and Health Sciences

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