Question:
Solve -15 = 44*u - 39*u for u..

Answer:
-3

Question:
Solve 8*v + 8 + 32 = 0 for v..

Answer:
-5

Question:
Solve -89*j = -72*j - 37 + 241 for j..

Answer:
-12

Question:
Solve 649*j + 878*j + 3391 + 3766 = -18802 for j..

Answer:
-17