Question:
Solve -213*j = 609*j + 476*j - 230*j + 50196 for j..

Answer:
-47

Question:
Solve 7*i = -0*i + 21 for i..

Answer:
3

Question:
Solve -25*f = -21*f + 16 for f..

Answer:
-4

Question:
Solve -45*j - 2464 + 1384 = 0 for j..

Answer:
-24