Question:
Solve -68*z - 1060 + 157 - 1545 = 0 for z..

Answer:
-36

Question:
Solve -618*c - 2365 = 1808 + 153 for c..

Answer:
-7

Question:
Solve -806 = -26*c - 130 for c..

Answer:
26

Question:
Solve -51*s = -11*s + 40 for s..

Answer:
-1