question: Teacher asked me this: Solve 309*u - 73*u - 93*u + 3146 = 0 for u.
++++++++++
answer: -22

question: Teacher asked me this: Solve -2504*l - 353*l = -58401 - 104448 for l.
++++++++++
answer: 57

question: Teacher asked me this: Solve 31*p = 133*p - 61*p + 1066 for p.
++++++++++
answer: -26

question: Teacher asked me this: Solve 57 = 4*f + 45 for f.
++++++++++
answer:
3