question: Teacher asked me this: Solve 2 = -2898*b + 2907*b + 173 for b.
++++++++++
answer: -19

question: Teacher asked me this: Solve -55*l + 8568940 - 8566850 = 0 for l.
++++++++++
answer: 38

question: Teacher asked me this: Solve -1513*r + 3027*r + 11 = 1513*r for r.
++++++++++
answer: -11

question: Teacher asked me this: Solve 526*u - 25*u = 151*u - 378*u + 49504 for u.
++++++++++
answer:
68