Question:
Solve 258468*z - 1806 = 258510*z for z..

Answer:
-43

Question:
Solve 508*l + 681 + 1784 = -10235 for l..

Answer:
-25

Question:
Solve 7*a - 52 + 78 = -135 for a..

Answer:
-23

Question:
Solve -1171*a = 996*a - 1988*a - 1074 for a..

Answer:
6