Question:
Solve -10*x + 0*x = 3*x for x..

Answer:
0

Question:
Solve 1271 - 1979 = -316*o - 3511 - 2253 for o..

Answer:
-16

Question:
Solve 25486*v = 25459*v - 270 for v..

Answer:
-10

Question:
Solve 0 = 9*u + 2 + 16 for u..

Answer:
-2