Question: What is the solution?

Solve -6456*a - 12 = -6453*a for a.

Answer: -4

Question: What is the solution?

Solve -107*q - 1014 = 163 for q.

Answer: -11

Question: What is the solution?

Solve -13*b - 5*b + 71*b = 0 for b.

Answer: 0

Question: What is the solution?

Solve 100*q - 1071 = 116*q - 407 + 312 for q.

Answer:
-61