Question:
Solve -23*x = -11*x + 48 for x..

Answer:
-4

Question:
Solve -16 = 57*c - 73 for c..

Answer:
1

Question:
Solve 68949*o + 1303 = 68692*o - 496 for o..

Answer:
-7

Question:
Solve 63*a + 137 = 161*a - 59 for a..

Answer:
2