Question: What is the solution?

Solve 0 = 4*h - 10*h - 6 for h.

Answer: -1

Question: What is the solution?

Solve -706*y = -646*y + 2160 for y.

Answer: -36

Question: What is the solution?

Solve -70 = 15*n - n for n.

Answer: -5

Question: What is the solution?

Solve -12*a - 24*a = -216 for a.

Answer:
6