How to make a thing math problem up

Which of the following are accepted without proof in a logical system? check all that apply.

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?

Look at triangle wxy what is the length (in centimeters) of the side wy of the triangle?