Question:
Solve 0 = -4*b + 2*b - 2 for b..

Answer:
-1

Question:
Solve 0 = 1860*m - 1978*m - 1180 for m..

Answer:
-10

Question:
Solve 0 = 72*y + 2621 - 2765 for y..

Answer:
2

Question:
Solve 8*y - 13 = 35 for y..

Answer:
6