question: Teacher asked me this: Solve -512 = -77*i + 258 for i.
++++++++++
answer: 10

question: Teacher asked me this: Solve 3*a - 1405 + 1426 = 0 for a.
++++++++++
answer: -7

question: Teacher asked me this: Solve 45*i + 856 + 1065 + 89 = -150 for i.
++++++++++
answer: -48

question: Teacher asked me this: Solve -2*i + 18 - 8 = 0 for i.
++++++++++
answer:
5