Question:
Solve 166*n - 110*n - 672 = 0 for n..

Answer:
12

Question:
Solve -74*v - 143 = -154*v + 93*v for v..

Answer:
-11

Question:
Solve 0 = -3*j - 681 + 657 for j..

Answer:
-8

Question:
Solve -137 - 10 = -49*g for g..

Answer:
3