Question: What is the solution?

Solve -10717*t - 99945 = -35643 for t.

Answer: -6

Question: What is the solution?

Solve -13*x - 42 = 10 for x.

Answer: -4

Question: What is the solution?

Solve 4323 + 17044 = -1624*v - 2993 for v.

Answer: -15

Question: What is the solution?

Solve 1877*r + 28 - 66 = 1879*r for r.

Answer:
-19