Question:
Solve -11*u + 64*u - 534 = 685 for u..

Answer:
23

Question:
Solve 24*o = 33*o - 45 for o..

Answer:
5

Question:
Solve 179*z + 6843 - 3359 = 6348 for z..

Answer:
16

Question:
Solve -3999 = 673*y - 11402 for y..

Answer:
11