Solve the system using elimination. 3x – y = 28 3x + y = 14

Answer this question! 30 points and brainliest!

Pete is making decorations for a dinner party. the instructions tell him to use 9 flowers for a medium-sized decoration. complete each statement to adjust the flowers for different-sized decorations based on these instructions.

Can someone me and do the problem plz so i can understand it more better