Question:
Solve -215*y + 223*y + 8 = 0 for y..

Answer:
-1

Question:
Solve -784 = 14*t - 812 for t..

Answer:
2

Question:
Solve 21*j = 17*j - 4 for j..

Answer:
-1

Question:
Solve -498*n - 320 + 6066 = -4214 for n..

Answer:
20