Question:
Solve 83*z - 888 = -291*z + 26*z + 1896 for z..

Answer:
8

Question:
Solve -113*y - 70 = -127*y for y..

Answer:
5

Question:
Solve -10*f = 820*f + 1163*f - 103636 for f..

Answer:
52

Question:
Solve -499 = -4*x - 527 for x..

Answer:
-7