Question:
Solve -580*a - 11537 = -438*a - 281*a for a..

Answer:
83

Question:
Solve 0 = -98*y + 109*y + 143 for y..

Answer:
-13

Question:
Solve -42308 = -84*h - 42980 for h..

Answer:
-8

Question:
Solve -42*j + 8 = -40*j for j..

Answer:
4