question: Teacher asked me this: Solve -49*z + 165 = 29*z - 23*z for z.
++++++++++
answer: 3

question: Teacher asked me this: Solve -1155 = 77*p + 28*p for p.
++++++++++
answer: -11

question: Teacher asked me this: Solve -3*l - 21 = -10*l for l.
++++++++++
answer: 3

question: Teacher asked me this: Solve 30*a - 4*a = -52 for a.
++++++++++
answer:
-2