question: Teacher asked me this: Solve 0 = -769*k + 84639 - 115399 for k.
++++++++++
answer: -40

question: Teacher asked me this: Solve -353*b = -373*b + 340 for b.
++++++++++
answer: 17

question: Teacher asked me this: Solve 13*t - 16 = 21*t for t.
++++++++++
answer: -2

question: Teacher asked me this: Solve 0 = -53*a - 5418 + 2874 for a.
++++++++++
answer:
-48