Question:
Solve 2182 + 10931 - 1761 = -129*r for r..

Answer:
-88

Question:
Solve -22*s - 35 = -29*s for s..

Answer:
5

Question:
Solve -38 - 12 = -10*a for a..

Answer:
5

Question:
Solve 137*l + 96*l + 591 + 807 = 0 for l..

Answer:
-6