Khan Academy Static

Learn how to study algebraic expressions containing variables whose values are unknown, and how to derive new facts about those expression by using other information. For example, given two positive integers b and c where b>c, determine which expression is greater: b/(b+c) or 0.5.

7372_Reasoning_about_unknown_variables.html

7373_Reasoning_about_unknown_variables_divisibility.html

7375_Structure_in_exponential_expression.html

7371_Analyzing_structure_word_problem_pet_store_2_of_2_.html

7374_Structure_in_rational_expression.html

7370_Analyzing_structure_word_problem_pet_store_1_of_2_.html