Systems of equations
Solve systems of two linear equations in two unknowns by substitution and elimination.
Available exercises
Systems by elimination
Two linear equations in standard form are given. Solve the system by elimination (adding or subtracting the equations) and find x and y.
Systems from word problems
A short word problem describes two numbers by their sum and difference. Set up and solve the system to find the two numbers.
Solve a system from a graph
Two lines are drawn on a coordinate grid. Read the solution of the system — the point where the lines cross.
Systems by substitution
Two linear equations are given; one already has y on its own. Solve the system by substitution and find x and y.