Question:
Solve -92*c = -318*c + 157*c + 1104 for c..

Answer:
16

Question:
Solve 0 = -84*m - 23 - 145 for m..

Answer:
-2

Question:
Solve -142*o - 264*o + 23*o = -25*o - 2148 for o..

Answer:
6

Question:
Solve 7*u + 12*u = 19 for u..

Answer:
1