question: Teacher asked me this: Solve 273*x - 773 = -83*x - 17861 for x.
++++++++++
answer: -48

question: Teacher asked me this: Solve -33*r = 111 - 441 for r.
++++++++++
answer: 10

question: Teacher asked me this: Solve 343*c = 359*c - 80 for c.
++++++++++
answer: 5

question: Teacher asked me this: Solve -1390221*y = -1390293*y + 1512 for y.
++++++++++
answer:
21