Question:
Solve 87*y = 55*y + 224 for y..

Answer:
7

Question:
Solve -19*u = -26*u + 6*u + 10 for u..

Answer:
10

Question:
Solve -335*u = -4830 + 8850 for u..

Answer:
-12

Question:
Solve -26280 = -651*u + 14082 for u..

Answer:
62