8.FGR.7.1
Interpret and solve relevant mathematical problems leading to two linear equations in two variables.
Example Problems
In 16 years, Ben will be 3 times as old as he is right now.
How old is he right now?
How old is he right now?
Solve the system of equations using the elimination method:
Solve the following system of equations using the elimination method:
Khan Academy ResourcesNumber of solutions to system of equations reviewSubstitution method review (systems of equations)Systems of equations with substitutionAge word problemsSystems of equations with graphingSystems of equations with substitutionSystems of equations word problemsNumber of solutions to a system of equations graphicallyNumber of solutions to a system of equations algebraicallySolutions of systems of equationsSystems of equations: trolls, tolls (2 of 2)Systems of equations: trolls, tolls (1 of 2)Systems of equations number of solutions: fruit prices (1 of 2)Systems of equations with substitution: -3x-4y=-2 & y=2x-5Systems of equations number of solutions: fruit prices (2 of 2)Age word problem: Ben & WilliamAge word problem: Arman & DiyaAge word problem: ImranSystems of equations with substitution: y=-1/4x+100 & y=-1/4x+120Systems of equations with substitution: y=4x-17.5 & y+2x=6.5Systems of equations with substitution: 9x+3y=15 & y-x=5Systems of equations with graphing: choresSystems of equations with substitution: 2y=x+7 & x=y-4Systems of equations with substitution: y=-5x+8 & 10x+2y=-2Systems of equations with substitution: coinsNumber of solutions to a system of equations algebraicallySystem of equations word problem: infinite solutionsSystem of equations word problem: no solutionSystem of equations word problem: walk & ride

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