question: Teacher asked me this: Solve -1535*d + 1405*d = 1040 for d.
++++++++++
answer: -8

question: Teacher asked me this: Solve 173*c + 384*c = -122*c - 38024 for c.
++++++++++
answer: -56

question: Teacher asked me this: Solve 0 = -1101*o + 1127*o - 260 for o.
++++++++++
answer: 10

question: Teacher asked me this: Solve 0*x = 4*x - 8 for x.
++++++++++
answer:
2