Sal solves a system of equations to figure out how long a couple of different shelves will be. Created by Sal Khan and Monterey Institute for Technology and Education.

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Topic D: Systems of linear equations and their solutions

Systems of equations: trolls, tolls (1 of 2)

Systems of equations: trolls, tolls (2 of 2)

Testing a solution to a system of equations

Practice: Test solutions to systems of equations

Systems of equations with graphing

Systems of equations with graphing: 5x+3y=7 & 3x-2y=8

Systems of equations with graphing: y=7/5x-5 & y=3/5x-1

Systems of equations with graphing: chores

Practice: Systems of equations with graphing

Systems of equations with elimination: 3t+4g=6 & -6t+g=6

Systems of equations with elimination

Systems of equations with elimination: x+2y=6 & 4x-2y=14

Systems of equations with elimination: -3y+4x=11 & y+2x=13

Systems of equations with elimination: 2x-y=14 & -6x+3y=-42

Systems of equations with elimination: 4x-2y=5 & 2x-y=2.5

Systems of equations with elimination: x-4y=-18 & -x+3y=11

Practice: Systems of equations with elimination

Systems of equations with elimination: 6x-6y=-24 & -5x-5y=-60

Practice: Systems of equations with elimination challenge

Systems of equations with substitution: 2y=x+7 & x=y-4

Systems of equations with substitution

Systems of equations with substitution: y=4x-17.5 & y+2x=6.5

Systems of equations with substitution: -3x-4y=-2 & y=2x-5

Systems of equations with substitution: 9x+3y=15 & y-x=5

Practice: Systems of equations with substitution

Systems of equations with substitution: y=-5x+8 & 10x+2y=-2

Systems of equations with substitution: y=-1/4x+100 & y=-1/4x+120

Practice: Solve linear systems of equations

Systems of equations with elimination: apples and oranges

Systems of equations with elimination: TV & DVD

Systems of equations with elimination: King's cupcakes

Systems of equations with elimination: Sum/difference of numbers

Systems of equations with elimination: potato chips

Systems of equations with elimination: coffee and croissants

Systems of equations with substitution: coins

Systems of equations with substitution: potato chips

Systems of equations with substitution: shelves

Practice: Systems of equations word problems

Age word problem: Imran

Age word problem: Ben & William

Age word problem: Arman & Diya

Practice: Age word problems

Systems of equations number of solutions: x+2y=13 & 3x-y=-11

Systems of equations number of solutions: fruit prices (1 of 2)

Systems of equations number of solutions: fruit prices (2 of 2)

Systems of equations number of solutions: y=3x+1 & 2y+4=6x

Systems of equations number of solutions: 4x+2y=16 & y=-2x+8

Systems of equations number of solutions: 10x-2y=4 & 10x-2y=16

Practice: Number of solutions to a system of equations graphically

Forming systems of equations with different numbers of solutions

Practice: Number of solutions to a system of equations algebraically

Comparing Celsius and Fahrenheit temperature scales

Converting Fahrenheit to Celsius