question: Teacher asked me this: Solve -671*a = -389*a - 5640 for a.
++++++++++
answer: 20

question: Teacher asked me this: Solve -141*x = -112*x - 281*x - 175*x + 5978 for x.
++++++++++
answer: 14

question: Teacher asked me this: Solve 2*p - p = -1 for p.
++++++++++
answer: -1

question: Teacher asked me this: Solve 165*z = 18*z - 2205 for z.
++++++++++
answer:
-15