question: Teacher asked me this: Solve 4*f - 40 = 24*f for f.
++++++++++
answer: -2

question: Teacher asked me this: Solve -8778*j - 2199960 = 9555*j for j.
++++++++++
answer: -120

question: Teacher asked me this: Solve 91*l - 33 = 102*l for l.
++++++++++
answer: -3

question: Teacher asked me this: Solve -47*b - 14820 = 144*b - 877 for b.
++++++++++
answer:
-73