question: Teacher asked me this: Solve 12 = -54*t + 58*t for t.
++++++++++
answer: 3

question: Teacher asked me this: Solve -78 = -124*d + 294 for d.
++++++++++
answer: 3

question: Teacher asked me this: Solve 1836*t + 1838*t = 3683*t - 81 for t.
++++++++++
answer: 9

question: Teacher asked me this: Solve 639*i + 2815*i + 279774 = 0 for i.
++++++++++
answer:
-81