question: Teacher asked me this: Solve 375*s + 381*s + 396 = 759*s + 90 for s.
++++++++++
answer: 102

question: Teacher asked me this: Solve 648 = 324015*i - 324087*i for i.
++++++++++
answer: -9

question: Teacher asked me this: Solve 0 = -2066*f + 2218*f + 3496 for f.
++++++++++
answer: -23

question: Teacher asked me this: Solve -19*u + 65 = 81 - 20 + 992 for u.
++++++++++
answer:
-52