Unit 5 - Objective 6 - Solving 3 Equations in 3 Unknowns Algebraically
Now solve a system of 3 equations in 3 unknowns and find its solution which is the set of values x, y, and z that satisfy all three equations. The general method is to pair 2 equations and eliminate one variable. Pair 2 other equations and eliminate the same variable. That reduces the system to 2 equations and 2 unknowns. Solve as in the last objective and back substitute to get value for x, y, and z. Sometimes you get lucky so watch for ways to make the work easier.
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