2. Solving Systems by Substitution (isolated) Solving Systems by Substitution (not isolated)

3. Notes Solving a System of Equations by Substitution 1. Solve one of the equations for x or y. 2. Substitute your new expression from Step 1 into the other equation and solve for the variable. 3. Plug that solved variable into the other equation from Step 1 and solve for the other variable. 4. Check your answers by plugging it into the original equations. - Get x or y by itself.

4. Notes Ex. Solve the system by substitution. 2) Substitute into other equation. 3) Plug in answer into other equation. 4) Check answer! 1) Solve for x or y. The variable x is already by itself.

5. Notes Ex. Solve the system by substitution. 2) Substitute into other equation. 3) Plug in answer into other equation. 4) Check answer! 1) Solve for x or y. The variable y is already by itself. Now you try.

6. Notes Ex. Solve the system by substitution. 2) Substitute into other equation. 3) Plug in answer into other equation. 4) Check answer! 1) Solve for x or y. The variable x is already by itself. Step 3 Now you try.

7. Notes Ex. Solve the system by substitution. 2) Substitute into other equation. 3) Plug in answer into other equation. 4) Check answer! 1) Solve for x or y. The variable x is already by itself. Step 3

8. Notes Ex. Solve the system by substitution. 2) Substitute into other equation. 3) Plug in answer into other equation. 4) Check answer! 1) Solve for x or y. Step 3

9. Notes Ex. Solve the system by substitution. 2) Substitute into other equation. 3) Plug in answer into other equation. 4) Check answer! 1) Solve for x or y. Step 3 Now you try.

10. Class Work Solve the system by substitution.

11. Class Work Solve the system by substitution.