question: Teacher asked me this: Solve -13*c + 2*c - 3*c - 748 = 3*c for c.
++++++++++
answer: -44

question: Teacher asked me this: Solve 174*r = 152*r + 478 + 974 for r.
++++++++++
answer: 66

question: Teacher asked me this: Solve 499*c + 79855 = 4468*c - 112416 + 45418 for c.
++++++++++
answer: 37

question: Teacher asked me this: Solve 362*r = 356*r for r.
++++++++++
answer:
0