Help again? :( ''Create your own word problem where the answer is ⅝. It should be solved using multiplication''

1/3(x-10)=-4 solve for x with steps

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?

Find the multiplicative inverse of 8-12i