Jose earned 50 points in a video game. He lost 35 points, earned 89, then lost 30 more points. Enter and evaluate an expression to find his final score in the video game.

Skew lines(segments) are lines(segments) in 3 dimensions that do not intersect the given segment and are not parallel to it.  ae, bf, eg, and fh are your skew segments.  i hope that : )