question: Teacher asked me this: Solve 9 - 8 = -1338*u + 1339*u for u.
++++++++++
answer: 1

question: Teacher asked me this: Solve -190 + 180 = 2*b for b.
++++++++++
answer: -5

question: Teacher asked me this: Solve -874 = -113*a - 2230 for a.
++++++++++
answer: -12

question: Teacher asked me this: Solve 32*d = -64*d - 480 for d.
++++++++++
answer:
-5