Question: What is the solution?

Solve -884*d - 3071 - 4093 + 516 = -53*d for d.

Answer: -8

Question: What is the solution?

Solve -s = -4*s + 9 for s.

Answer: 3

Question: What is the solution?

Solve 10*y = 19*y + 20*y - 319 for y.

Answer: 11

Question: What is the solution?

Solve -55328*k + 55349*k + 21 = 0 for k.

Answer:
-1