Question:
Solve -2*a - 11 = -7 for a..

Answer:
-2

Question:
Solve 34 - 3 = 117*u + 31 for u..

Answer:
0

Question:
Solve 131 - 290 - 191 = -14*n for n..

Answer:
25

Question:
Solve 0 = -5*q - 23*q - 84 for q..

Answer:
-3