question: Teacher asked me this: Solve -980 = -170*s + 2080 for s.
++++++++++
answer: 18

question: Teacher asked me this: Solve -88*w + 58*w = 132*w + 1296 for w.
++++++++++
answer: -8

question: Teacher asked me this: Solve -15408*c + 15471*c = 1953 for c.
++++++++++
answer: 31

question: Teacher asked me this: Solve -21*i + 51*i = 60 for i.
++++++++++
answer:
2