Question:
Solve -3*l - 13 + 190 = -28 + 4 for l..

Answer:
67

Question:
Solve -64 = 135*v - 151*v for v..

Answer:
4

Question:
Solve 2130*u = -92728 - 73714 - 3958 for u..

Answer:
-80

Question:
Solve 42*p - 19*p - 23 = 0 for p..

Answer:
1