If we double each side of the second equation, 2x+y=8 , we have 4x+2y=16 . Explain why the same (x, y) pair that is the solution to the system is also a solution to this new equation.

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?

Item 1 solve for s. s+24=90 −114 −66 66 114

I’ve been trying all day to figure this puzzle out. i need the work for it aswell. it is a factoring polynomials tarsia. the image is below.