Question: What is the solution?

Solve 10 = 3*d + 25 for d.

Answer: -5

Question: What is the solution?

Solve -66*t - 4305 = 57*t for t.

Answer: -35

Question: What is the solution?

Solve -63 + 243 = 36*r for r.

Answer: 5

Question: What is the solution?

Solve 99*v + 327*v - 5112 = 0 for v.

Answer:
12