Solving Systems of three equations with three variables Using
substitution or elimination
Slide 3
Using substitution Isolate a variable in one equation
Substitute for the isolated variable in the other two equations Now
you have two variables and two equations You can solve these two
equations using either substitution or elimination
Slide 4
Using Elimination Use a combination of any two equations to
eliminate a variable. Use two different equations to eliminate the
SAME variable. Now you have two variables and two equations You can
solve these two equations using either substitution or
elimination