Solving 3-Variable Systems using Elimination

3-variable elimination notes This is the video you should have already taken notes on. 2. Solve the following 3-Variable System using Elimination.x+y-2z=5-x+2y+z=22x+3y-z=9 Fill in the missing numbers for intersection:(1,2,-1) 3. Solve the following 3-Variable System using Elimination.x+4y-6z=-12x-y+2z=-7-x+2y-4z=5 Fill in the missing numbers for intersection:(-3,-1,-1) 4. Solve the following 3-Variable System using Elimination.2x-y-z=154x+5y+2z=10-x-4y+3z=-20 Fill in the missing numbers for intersection:(5,0,-5) 6. Three orders are placed at a pizza shop. 2 small pizzas, 1 liter of soda, and 1 salad cost $14. 1 small pizza, 1 liter of soda, and 3 salads cost 15. 3 small pizzas, 1 liter of soda, and 2 salads cost $22. How much does each item cost? (Just write the number) A small pizza costs: $ 5A liter of soda costs: $ 1A salad costs: $ 3