Question:
Solve 390 - 398 = d for d..

Answer:
-8

Question:
Solve 0 = -319*y + 479 - 276 - 1479 for y..

Answer:
-4

Question:
Solve -n + 3787 = 3788 for n..

Answer:
-1

Question:
Solve -186*m - 4658 + 117 = 53*m for m..

Answer:
-19