Question:
Solve -24*r = -13*r - 33 for r..

Answer:
3

Question:
Solve -25419 = 2015*x + 817*x + 27138 + 4083 for x..

Answer:
-20

Question:
Solve -256*o + 2565 = -85*o for o..

Answer:
15

Question:
Solve 29 - 17 = -4*g for g..

Answer:
-3