Question: What is the solution?

Solve -21*j - 15 = 6 for j.

Answer: -1

Question: What is the solution?

Solve 171*l + 35 = -2155 - 375 for l.

Answer: -15

Question: What is the solution?

Solve 0 = -110*d + 128*d + 216 for d.

Answer: -12

Question: What is the solution?

Solve 9*p - 29 = -56 for p.

Answer:
-3