Question: What is the solution?

Solve 1540 = 883*r - 743*r for r.

Answer: 11

Question: What is the solution?

Solve -3488*m - 1269*m = -55092 + 159746 for m.

Answer: -22

Question: What is the solution?

Solve -225*t - 270 - 829 = 889 + 487 for t.

Answer: -11

Question: What is the solution?

Solve -25*v - 427 + 52 = 0 for v.

Answer:
-15