question: Teacher asked me this: Solve -18 = -61*i + 64*i for i.
++++++++++
answer: -6

question: Teacher asked me this: Solve 106*z + 952 + 3272 = -69*z + 131*z for z.
++++++++++
answer: -96

question: Teacher asked me this: Solve 5070*t = 5074*t - 28 for t.
++++++++++
answer: 7

question: Teacher asked me this: Solve -21 = -12*k + 15 for k.
++++++++++
answer:
3