question: Teacher asked me this: Solve 136*z + 336 = -25*z + 49*z for z.
++++++++++
answer: -3

question: Teacher asked me this: Solve 5*s + 138 = -18*s for s.
++++++++++
answer: -6

question: Teacher asked me this: Solve 0 = -8*g - 97 + 129 for g.
++++++++++
answer: 4

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