20/5+7=
someone help me plz will mark brainliest

Me because some of question i don’t understand

Hector and alex traded video games. alex gave hector one fourth of his video games in exchange for 6 video games. then he sold 3 video games and gave 2 video games to his brother. alex ended up with 16 video games. how many video games did alex have when he started?

Simplify the following expression 48^1/2