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Select variables to represent the unknown quantities. Using the given information, write a system of two linear equations relating the two variables. Solve the system of linear equations using …

Systems of equations word problems (with zero and infinite solutions) Get 3 of 4 questions to level up!

An old video where Sal introduces the elimination method for systems of linear equations. Created by Sal Khan.

Sal solves the system of equations -3y + 4x = 11 and y + 2x = 13 using elimination. Created by Sal Khan and Monterey Institute for Technology and Education.

Sal solves a word problem about the price of coffee and croissant by creating a system of equations and solving it.

Sal solves a word problem about the weights of TVs and DVDs by creating a system of equations and solving it. Created by Sal Khan and Monterey Institute for Technology and Education.

Mar 15, 2021 · What do Khan Academy’s interactive math worksheets cover? Our 100,000+ practice questions cover every math topic from arithmetic to calculus, as well as ELA, Science, …

Learn the basics of algebra—focused on common mathematical relationships, such as linear relationships.

Solve systems of equation with multi-step elimination (e.g., a manipulation is needed in order for x-values or y-values to cancel each other out).