Question: What is the solution?

Solve 4*s = -12*s - 32 for s.

Answer: -2

Question: What is the solution?

Solve 0 = 2*i + 6*i + 16 for i.

Answer: -2

Question: What is the solution?

Solve 411*x + 129*x = 5940 for x.

Answer: 11

Question: What is the solution?

Solve -70 - 570 = -40*l for l.

Answer:
16