Substitution:

5x - y= -5

3x - 6y = 24

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?

The fraction 7/9 is equivalent to a percent that is greater than 100%. truefalse

Which function has the domain x> -11?