Question:
Solve 631 + 634 = -140*j + 25*j for j..

Answer:
-11

Question:
Solve -134250 = -27*y - 133980 for y..

Answer:
10

Question:
Solve -849*z + 716 + 1351 = -902*z for z..

Answer:
-39

Question:
Solve 0 = 26*x + 104 + 26 for x..

Answer:
-5