Answer
15 dollars
Work Step by Step
Angie's Part: (20+3x)
Kenny's Part: (20+2x)
Total for software and game play: 115 dollars
$(20+3x)+(20+2x)=115$
$20+3x+20+2x=115$
(Add coefficients of the same variable)
$40+5x=115$
(Subtract 40 from each side)
$5x=75$
(Divide each side by 5)
$x=15$