(21 divide) - 3) multiple6 + 12 - 7. please slove this​

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?

X2 + y 2 = 36 x + y = 6 solve the system of equations.

Select the conic section that represents the equation. 3x2 + 3y2 -2x + 4 = 0