question: Teacher asked me this: Solve -7 = -10*u - 57 for u.
++++++++++
answer: -5

question: Teacher asked me this: Solve -516*d - 1837*d - 386*d = -389*d + 16450 for d.
++++++++++
answer: -7

question: Teacher asked me this: Solve -33*n - 38*n - 14*n = -15*n - 2590 for n.
++++++++++
answer: 37

question: Teacher asked me this: Solve 149*g - 240 = 505 for g.
++++++++++
answer:
5