Question:
Solve -6*i = -6*i + 6*i for i..

Answer:
0

Question:
Solve 0 = -2*y - 0*y + 10 for y..

Answer:
5

Question:
Solve 0 = 8*x - 9*x - 5 for x..

Answer:
-5

Question:
Solve -40*q - 7981 = -332*q - 2141 for q..

Answer:
20