Question:
Solve 181*u - 84 = 202*u for u..

Answer:
-4

Question:
Solve 0 = -364*j - 359*j + 146*j - 601*j - 10602 for j..

Answer:
-9

Question:
Solve -284*r - 104*r = -71*r for r..

Answer:
0

Question:
Solve 4598*h = 4550*h - 1440 for h..

Answer:
-30