question: Teacher asked me this: Solve 5*x + 20 = -0 for x.
++++++++++
answer: -4

question: Teacher asked me this: Solve 12*f + 94 = 46 for f.
++++++++++
answer: -4

question: Teacher asked me this: Solve 65*y + 498 = 169*y - 21*y for y.
++++++++++
answer: 6

question: Teacher asked me this: Solve -2*n - 14602 = -4*n - 147*n for n.
++++++++++
answer:
98