Question:
Solve 0 = 81*z - 65802 + 70500 for z..

Answer:
-58

Question:
Solve 24291 = -1190*o - 172*o - 18938 - 1717 for o..

Answer:
-33

Question:
Solve -28*o + 32*o + 16 = 0 for o..

Answer:
-4

Question:
Solve 121 + 87 = 1132*a - 1106*a for a..

Answer:
8