Question:
Solve -2203*i + 6602*i - 2055*i - 2119*i + 4725 = 0 for i..

Answer:
-21

Question:
Solve -866*q + 863*q = -18 for q..

Answer:
6

Question:
Solve 1792 = 20*r + 1832 for r..

Answer:
-2

Question:
Solve 73*o - 124 = 149*o + 901*o + 7692 for o..

Answer:
-8