Question:
Solve -25*d = -26*d + 4 for d..

Answer:
4

Question:
Solve 1416*v = 1444*v + 504 for v..

Answer:
-18

Question:
Solve -327*s - 480 = 320*s - 743*s for s..

Answer:
5

Question:
Solve 5 = 2*h - 3*h for h..

Answer:
-5