I WOULD REALLY APPRECIATE A STEP BY STEP EXPLANATION SO I CAN UNDERSTAND IT MYSELF :)) <3 I've gotten this problem wrong three times and can't seem to figure out what I'm doing wrong :(

Castel and Gabriella are selling pies for a school fundraiser. Customers can buy apple pies and lemon meringue pies. Castel sold 6 apple pies and 4 lemon meringue pies for a total of $80. Gabriella sold 6 apple pies and 5 lemon meringue pies for a total of $94.

Could someone please walk me through the process of writing two systems of equations that represents the number of each type of pie

Let x = cost of each apple pie; y = cost of each lemon meringue pie.

Thank you thank you so so much!