Hi Barrett,
1. E + 27.36 = −42.09
42.09 + 27.36 = 69.45
-69.45 + 27.36 = -42.09
e = -69.45
2. g − 104.09 = 38.05
104.09 + 38.05 = 142.14
142.14 - 104.09 = 38.05
g = 142.14
3. 99.32 = j − 67.23
99.32 + 67.23 = 166.55
166.55 - 67.23 = 99.32
j = 166.55
4. −87.12 = r + 239.89
239.89 + 87.12 = 327.01
-327.01 + 239.89 = -87.12
r = -327.01