question: Teacher asked me this: Solve 556*d - 5 = 561*d for d.
++++++++++
answer: -1

question: Teacher asked me this: Solve 0 = -10*a - 12 + 32 for a.
++++++++++
answer: 2

question: Teacher asked me this: Solve -2123*q - 162900 = -494*q for q.
++++++++++
answer: -100

question: Teacher asked me this: Solve -9*l + 4*l + 15 = 0 for l.
++++++++++
answer:
3