Q: What is the solution?
Solve -665*c + 7441 = -4521 - 3333 for c.

A: 23

Q: What is the solution?
Solve -6*a + 2*a + 20 = 0 for a.

A: 5

Q: What is the solution?
Solve -13*w - 14*w + 81 = 0 for w.

A:
3