question: Teacher asked me this: Solve 7*a - 210 = -217 for a.
++++++++++
answer: -1

question: Teacher asked me this: Solve -1455 = 701*b - 310 - 40 + 998 for b.
++++++++++
answer: -3

question: Teacher asked me this: Solve -399*n + 356*n - 589*n - 7584 = 0 for n.
++++++++++
answer: -12

question: Teacher asked me this: Solve -88*f = -222 - 42 for f.
++++++++++
answer:
3