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Simultaneous equations

Algebraic Intersection of Linear functions

This topic is also referred to as solution of simultaneous equations.
  • Two equations in two unknowns:
    • There are two algebraic methods for solving a set of two equations involving two variables
    • Substitution method: we substitute one variable from one equation into the other
    • Elimination method: we eliminate one variable and form one equation
  • Three equations in three unknowns: For a set of three simultaneous equations involving three variables, the elimination method is the only practical procedure.