question: Teacher asked me this: Solve 3*a + 5 - 8 = 0 for a.
++++++++++
answer: 1

question: Teacher asked me this: Solve -27*y = -9*y + 54 for y.
++++++++++
answer: -3

question: Teacher asked me this: Solve 4 = -c - 0 for c.
++++++++++
answer: -4

question: Teacher asked me this: Solve -25 = 12*v + 13*v for v.
++++++++++
answer:
-1