question: Teacher asked me this: Solve 189*u + 4542 = 49*u - 4418 for u.
++++++++++
answer: -64

question: Teacher asked me this: Solve 124802 = 96*x + 126146 for x.
++++++++++
answer: -14

question: Teacher asked me this: Solve 2*l = 7*l - 45 for l.
++++++++++
answer: 9

question: Teacher asked me this: Solve 20 = 167*y - 187*y for y.
++++++++++
answer:
-1