question: Teacher asked me this: Solve -1990483*d + 6930 = -1990273*d for d.
++++++++++
answer: 33

question: Teacher asked me this: Solve 0 = -17*f + 155 - 181 - 195 for f.
++++++++++
answer: -13

question: Teacher asked me this: Solve 0 = -4*k - 0 + 4 for k.
++++++++++
answer: 1

question: Teacher asked me this: Solve 0 = -2*z + 8 for z.
++++++++++
answer:
4