question: Teacher asked me this: Solve 61*g - 55*g = -18 for g.
++++++++++
answer: -3

question: Teacher asked me this: Solve -84*n + 135 = 10 - 211 for n.
++++++++++
answer: 4

question: Teacher asked me this: Solve -k = -46*k + 45 for k.
++++++++++
answer: 1

question: Teacher asked me this: Solve -90*r + 118*r = -168 for r.
++++++++++
answer:
-6