question: Teacher asked me this: Solve 24 - 90 = 11*b for b.
++++++++++
answer: -6

question: Teacher asked me this: Solve 4*f - 30 = -38 for f.
++++++++++
answer: -2

question: Teacher asked me this: Solve -107*a = 8*a + 34*a + 1937 for a.
++++++++++
answer: -13

question: Teacher asked me this: Solve 1 = -2*x + 11 for x.
++++++++++
answer:
5