Question:
Solve 3 - 419 = -32*j for j..

Answer:
13

Question:
Solve -19*j = -21*j - 6 for j..

Answer:
-3

Question:
Solve 519*n = 3311 + 15620 - 3880 for n..

Answer:
29

Question:
Solve -286240 + 285670 = -19*g for g..

Answer:
30