question: Teacher asked me this: Solve -515*a + 250*a = 9010 for a.
++++++++++
answer: -34

question: Teacher asked me this: Solve 0 = 31*l - 723 + 599 for l.
++++++++++
answer: 4

question: Teacher asked me this: Solve 0 = -30*t + 112 - 52 for t.
++++++++++
answer: 2

question: Teacher asked me this: Solve -6 = -2*x - 0*x for x.
++++++++++
answer:
3