Question:
Solve 4*u + 20 = 8 for u..

Answer:
-3

Question:
Solve -263*v - 116*v = -200*v + 569*v - 7480 for v..

Answer:
10

Question:
Solve 88289*x - 7725 = 88896*x + 5629 for x..

Answer:
-22

Question:
Solve 269 = 118*l - 55 - 148 for l..

Answer:
4