question: Teacher asked me this: Solve 15*n - 43*n + 84 = 0 for n.
++++++++++
answer: 3

question: Teacher asked me this: Solve -20 = -v - 19 for v.
++++++++++
answer: 1

question: Teacher asked me this: Solve 49*z - 821 = -135 for z.
++++++++++
answer: 14

question: Teacher asked me this: Solve -679 + 353 = -4*j - 358 for j.
++++++++++
answer:
-8