question: Teacher asked me this: Solve -128*u - 80 = -317*u + 676 for u.
++++++++++
answer: 4

question: Teacher asked me this: Solve 305*v = -50*v - 110*v + 19676 + 7759 for v.
++++++++++
answer: 59

question: Teacher asked me this: Solve -561 = -235*f + 8369 for f.
++++++++++
answer: 38

question: Teacher asked me this: Solve 0 = -581*c + 611*c + 480 for c.
++++++++++
answer:
-16