Q: Solve -16 = 3*r - 16 for r.

A: 0

Q: Solve 6965*d = 3657*d + 3505*d - 3546 for d.

A: 18

Q: Solve 12*b - 10*b + 2 = 0 for b.

A: -1

Q: Solve -1042*t - 631 - 12544 = 14959 for t.

A:
-27