Q: What is the solution?
Solve -13*d = -11*d + 4 for d.

A: -2

Q: What is the solution?
Solve -201*l + 195*l + 42 = 0 for l.

A: 7

Q: What is the solution?
Solve 32*m - 62*m + 90 = -39*m for m.

A:
-10