Question:
Solve 4*o + 0 + 20 = 0 for o..

Answer:
-5

Question:
Solve -54*z + 60*z - 60 = 0 for z..

Answer:
10

Question:
Solve -3774*t - 3735*t + 11461*t - 18573 = 3801*t for t..

Answer:
123

Question:
Solve -11*m - 10*m = 84 for m..

Answer:
-4