question: Teacher asked me this: Solve -5*s + 12*s + 28 = 0 for s.
++++++++++
answer: -4

question: Teacher asked me this: Solve 0*m = m + 4*m for m.
++++++++++
answer: 0

question: Teacher asked me this: Solve 150 = 31*d - d for d.
++++++++++
answer: 5

question: Teacher asked me this: Solve 23*t = -387 + 525 for t.
++++++++++
answer:
6