Help ur guy out im not able to understand this

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?

Which of the following is the best first step in solving the equation below? 4+2㏒³x=17

Hurry which expression is equivalent to 3√x^5y?