question: Teacher asked me this: Solve -2964*f + 2980*f = 80 for f.
++++++++++
answer: 5

question: Teacher asked me this: Solve 23*v + 817 = 54*v + 12*v for v.
++++++++++
answer: 19

question: Teacher asked me this: Solve -2121*d - 87314 - 39068 + 18211 = 0 for d.
++++++++++
answer: -51

question: Teacher asked me this: Solve -64 - 638 = -3774*k + 1920*k + 1881*k for k.
++++++++++
answer:
-26