question: Teacher asked me this: Solve -54 - 93 = -49*l for l.
++++++++++
answer: 3

question: Teacher asked me this: Solve -419*w = -324*w - 5415 for w.
++++++++++
answer: 57

question: Teacher asked me this: Solve -87 = -31*d - 645 for d.
++++++++++
answer: -18

question: Teacher asked me this: Solve 429*y + 66143 - 5445 = 7931 for y.
++++++++++
answer:
-123