question: Teacher asked me this: Solve -106*b - 85*b + 142*b = -1764 for b.
++++++++++
answer: 36

question: Teacher asked me this: Solve -46*o - 71*o - 60*o = -128*o - 2646 for o.
++++++++++
answer: 54

question: Teacher asked me this: Solve 1284*s = 1263*s - 63 for s.
++++++++++
answer: -3

question: Teacher asked me this: Solve -569*a - 81 - 5277 = 901 for a.
++++++++++
answer:
-11