What is a first step to solve 6 + 7?​

Find the x coordinate of the point.

In a school 2/3 of the students study a language of those who study a language 2/5 study french

Jackie purchased 3 bottles of water and 2 cups of coffee for a family for $7.35. brian 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? i need this done