Question:
Solve -4*j - 6 = -j for j..

Answer:
-2

Question:
Solve -490*h + 12 = -493*h for h..

Answer:
-4

Question:
Solve 35653*z = 35849*z + 10584 for z..

Answer:
-54

Question:
Solve 138*h = -54779 + 57953 for h..

Answer:
23