HELP PLEASE I NEED IT DONE SOON

Georgia bought a packge of of 14 dollies to use in her valentines. she used 5/7 of the package to make her in valentines. how many dollies did she have left

Gretchen is setting up for a banquet. she has 300 chairs and needs to distribute them evenly among t tables. how many chairs should she put at each table? write your answer as an expression.

Solve this system of equations. 12x − 18y = 27 4x − 6y = 10