question: Teacher asked me this: Solve -9*o + 51*o + 220 = -2*o for o.
++++++++++
answer: -5

question: Teacher asked me this: Solve 15*d - 22 - 8 = 0 for d.
++++++++++
answer: 2

question: Teacher asked me this: Solve 0 = 12*g + 4*g for g.
++++++++++
answer: 0

question: Teacher asked me this: Solve -967 = -66*y - 43 for y.
++++++++++
answer:
14