Question:
Solve 85*y = 26*y - 59 for y..

Answer:
-1

Question:
Solve 9*u + 104 = -17*u for u..

Answer:
-4

Question:
Solve -138 - 85 = -47*o + 59 for o..

Answer:
6

Question:
Solve -b + 5*b = 8 for b..

Answer:
2