Ineed with both me asap i'll give points

Use the elimination method to find the solution to the system of equations. 2x - 3y = -9 -x + 3y = 6

Abby is preparing fruit punch for her party. she starts with a bowl filled with liquid that has 1/2 fruit juice and 1/2 sprite, but she decides it's too fruity. so she pours out 1/4 of the liquid, and then fills the bowl up again with sprite. what fraction of the punch is now sprite?

Which ordered pair is a solution to the system of linear equations? 2x + 3y= 6 –3x + 5y = 10