Write an equation to represent the relationship "a number decreased by negative 7 is the same thing as 48

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?

What percent of 18 is 24? and plz explain thx.

What are two numbers that add up to -9 and multiply to -10 best answer gets branliest and 100 extra points