Question: What is the solution?

Solve -230*d - 266*d + 780 = -526*d for d.

Answer: -26

Question: What is the solution?

Solve -81*a + 628 = -101 for a.

Answer: 9

Question: What is the solution?

Solve 61 = -10*z + 51 for z.

Answer: -1

Question: What is the solution?

Solve 336 = -89*q - 1197 - 158 for q.

Answer:
-19