Can you help with this question?

Jackie purchased 3 bottles of water and 2 cups of coffee for the family for $7.35. ryan bought 4 bottles of water and 1 cup of coffee for his family for 7.15. how much does each bottle of water cost? how much does each cup of coffee cost?

John has 1/2 pound of oranges to share with julie. if they share the oranges equally, how much will each of them have?

Find the solution to this system 2,1 1,-2 1,2 -1,2