Question:
Solve -174*r - 23561 = -21821 for r..

Answer:
-10

Question:
Solve -19*f + 45 = -69 for f..

Answer:
6

Question:
Solve 286*w + 1822 + 4625 = -12*w + 34757 for w..

Answer:
95

Question:
Solve 615*x - 36 = 510*x + 339 + 255 for x..

Answer:
6