question: Teacher asked me this: Solve 745*o - 160*o + 5513 = 248 for o.
++++++++++
answer: -9

question: Teacher asked me this: Solve -4 - 12 = -16*s for s.
++++++++++
answer: 1

question: Teacher asked me this: Solve -399 = 4*r - 411 for r.
++++++++++
answer: 3

question: Teacher asked me this: Solve -9*y + 14*y = 20 for y.
++++++++++
answer:
4