Q: What is the solution?
Solve -65*b - 214 - 213 = -4*b for b.

A: -7

Q: What is the solution?
Solve 0 = d + 2 - 4 for d.

A: 2

Q: What is the solution?
Solve 16*a + 19 - 115 = 0 for a.

A:
6