question: Teacher asked me this: Solve -22872 = -419*k + 4231*k for k.
++++++++++
answer: -6
Solve 0*r = -4*r - 20 for r.
Solve this plz.

A: -5
QUESTION: Math problem: Solve 83*i = 79*i - 28 for i.
ANS: -7
Q: What is the solution?
Solve -172*f + 91*f = -121*f for f.

A: 0
Write down the solution for this math problem: Solve -56*x - 522 = 84*x + 2418 for x.
answer: -21
Q: Solve:
Solve -13*o = -7 - 6 for o.

A:
1