question: Teacher asked me this: Solve 103*u + 461 + 84 = -129 - 47 for u.
++++++++++
answer: -7

question: Teacher asked me this: Solve -3126*m + 3187*m - 549 = 0 for m.
++++++++++
answer: 9

question: Teacher asked me this: Solve 189 = -20*u + 83*u for u.
++++++++++
answer: 3

question: Teacher asked me this: Solve 3*l + 12 = 6*l for l.
++++++++++
answer:
4