question: Teacher asked me this: Solve -1049*l + 1063*l = 0 for l.
++++++++++
answer: 0

question: Teacher asked me this: Solve -3*s - 150 + 165 = 0 for s.
++++++++++
answer: 5

question: Teacher asked me this: Solve -271*m = -290*m - 38 for m.
++++++++++
answer: -2

question: Teacher asked me this: Solve 69*z + 77 = 560 for z.
++++++++++
answer:
7