Alright, so the sum of two days is going to equal zero. The variable here is what Jesse got on the first day. Let's call it "x". x-6=0 x is the first day's score, -6 is the second day's score, and the total score is zero. Now, add 6 to both sides. x-6=0 +6 +6 x=6 Jesse's score for the first day was (+)6.
