Question:
Solve -569*u + 30 = -554*u for u..

Answer:
2

Question:
Solve 101*j - 111*j + 120 = 0 for j..

Answer:
12

Question:
Solve -836 = -199574*z + 199612*z for z..

Answer:
-22

Question:
Solve 9*z - 255*z - 4488 = -42*z for z..

Answer:
-22