Question: What is the solution?

Solve 554*l - 6648 = 277*l for l.

Answer: 24

Question: What is the solution?

Solve -241*u + 138103 = -689*u - 819*u for u.

Answer: -109

Question: What is the solution?

Solve -51*h + 37*h = 70 for h.

Answer: -5

Question: What is the solution?

Solve -4*d - 30 = -14*d for d.

Answer:
3