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4x-3y+z=-10
2x+y+3z=0
-x+2y-5z=17
Pick any two pairs of equations from the system.
You may have to multiply one of the equations by a nonzero constant before adding in order to eliminate one of the variables.
Eliminate the same variable from each pair using the Addition/Subtraction method.
Pick another pair of equations and solve for the same variable and repeat the first few steps.
You have created a system of two equations in two unknowns. Solve the resulting two-by-two system.
Back-substitute known variables into any one of the original equations and solve for the missing variable.
Home
Courses Taken
Philosophy of Teaching Math
c. Favorite Math Problem
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Hands On Activity
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