Diane flew home from vacation with a heavy bag. With the first airline she flew, Diane had to pay $14 to check her bag, plus $26 for every kilogram that her bag was over the weight limit. The next flight was with another airline that had the same weight limit. Diane had to pay $9 per kilogram that her bag was over the weight limit, in addition to the checked bag fee of $31. By coincidence, the fees ended up being the same with both airlines. Write a system of linear equations to represent the situation