question: Teacher asked me this: Solve 4*f - 16 = -24 for f.
++++++++++
answer: -2

question: Teacher asked me this: Solve -12 = -13*t + 9*t for t.
++++++++++
answer: 3

question: Teacher asked me this: Solve -55*l = -99*l - 256*l + 4800 for l.
++++++++++
answer: 16

question: Teacher asked me this: Solve -21 = 356*w - 363*w for w.
++++++++++
answer:
3