Q: What is the solution?
Solve 23 = -7*a - 12 for a.

A: -5

Q: What is the solution?
Solve -9493 + 6918 = -103*i for i.

A: 25

Q: What is the solution?
Solve -9421*c + 9407*c - 224 = 0 for c.

A:
-16