2. Solving Systems of three equations with three variables Using substitution or elimination

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

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