question: Teacher asked me this: Solve -1 = -16*f + 15 for f.
++++++++++
answer: 1

question: Teacher asked me this: Solve 13243*u - 12195*u - 70946 = -8138 + 1120 for u.
++++++++++
answer: 61

question: Teacher asked me this: Solve -2187*h + 236 = -2393*h + 30 for h.
++++++++++
answer: -1

question: Teacher asked me this: Solve 79*a - 7031 = -87*a - 723 for a.
++++++++++
answer:
38