question: Teacher asked me this: Solve 0 = 3*u + 14 - 26 for u.
++++++++++
answer: 4

question: Teacher asked me this: Solve -4265*l = -4256*l + 45 for l.
++++++++++
answer: -5

question: Teacher asked me this: Solve -7*l - 407 = -309 for l.
++++++++++
answer: -14

question: Teacher asked me this: Solve -2313*b + 2347*b + 34 = 0 for b.
++++++++++
answer:
-1