Question:
Solve -56104 = -4507*r + 808*r + 276806 for r..

Answer:
90

Question:
Solve 15*a + 60 - 30 = 0 for a..

Answer:
-2

Question:
Solve -751*o - 300*o + 27326 = 0 for o..

Answer:
26

Question:
Solve 107 = -44*o - 245 for o..

Answer:
-8