Question:
Solve 87*v - 75*v = -39 + 171 for v..

Answer:
11

Question:
Solve -4880 + 13859 + 5517 = 655*t - 51*t for t..

Answer:
24

Question:
Solve -150 + 740 = 59*l for l..

Answer:
10

Question:
Solve 18*v + 550*v = -7582 - 21954 for v..

Answer:
-52