Question:
Solve -405*k - 425*k + 1174*k + 1008 = 386*k for k..

Answer:
24

Question:
Solve -139*o = -395*o + 512 for o..

Answer:
2

Question:
Solve -2097*r + 1152*r = 18900 for r..

Answer:
-20

Question:
Solve 150*p + 194*p = 309*p for p..

Answer:
0