Question:
Solve 211*r + 315*r + 75*r - 76327 = 0 for r..

Answer:
127

Question:
Solve -k = 6*k - 35 for k..

Answer:
5

Question:
Solve 0 = -24*m + 91*m - 7*m - 60 for m..

Answer:
1

Question:
Solve 1898*a + 10385 = -6026 - 23430 + 1881 for a..

Answer:
-20