question: Teacher asked me this: Solve -6*z - 12 = -2*z for z.
++++++++++
answer: -3

question: Teacher asked me this: Solve -87*p - 19*p = -31*p + 59*p - 4556 for p.
++++++++++
answer: 34

question: Teacher asked me this: Solve 9038 - 6799 = -176*r + 5407 for r.
++++++++++
answer: 18

question: Teacher asked me this: Solve -197*r = -201*r - 4 for r.
++++++++++
answer:
-1