question: Teacher asked me this: Solve -1158*k - 257*k = 1212*k + 568*k + 9585 for k.
++++++++++
answer: -3

question: Teacher asked me this: Solve 15*r - 131 = 16 + 48 for r.
++++++++++
answer: 13

question: Teacher asked me this: Solve 116*k = 6*k - 2310 for k.
++++++++++
answer: -21

question: Teacher asked me this: Solve -92 = -2*u - 46 for u.
++++++++++
answer:
23