Question:
Solve -124*l + 156*l - 981 = -295*l for l..

Answer:
3

Question:
Solve 11*q = 23*q + 81*q + 930 for q..

Answer:
-10

Question:
Solve 0 = 12*c + 22*c - 42*c - 40 for c..

Answer:
-5

Question:
Solve 0 = -645*d - 599468 + 611078 for d..

Answer:
18