Question: What is the solution?

Solve 673*l + 1568 = 88*l - 199*l for l.

Answer: -2

Question: What is the solution?

Solve -11*p - 31*p - p + 430 = 0 for p.

Answer: 10

Question: What is the solution?

Solve 931*i - 40887 = -408*i + 100*i for i.

Answer: 33

Question: What is the solution?

Solve 225*u - 88*u + 1809 + 516 = -689 for u.

Answer:
-22