question: Teacher asked me this: Solve 62*x - 21 = 69*x for x.
++++++++++
answer: -3

question: Teacher asked me this: Solve 30 = -2786400*q + 2786395*q for q.
++++++++++
answer: -6

question: Teacher asked me this: Solve -90*k - 210 - 86 = 1414 for k.
++++++++++
answer: -19

question: Teacher asked me this: Solve 10*n - 124*n - 1938 = 0 for n.
++++++++++
answer:
-17