question: Teacher asked me this: Solve -2 = -13*r + 12*r for r.
++++++++++
answer: 2
Solve -420 = -176*s + 1868 for s.
Solve this plz.

A: 13
QUESTION: Math problem: Solve 1595*w = 1755*w + 3040 for w.
ANS: -19
Q: What is the solution?
Solve 113*c + 6*c = 5*c - 5*c + 6902 for c.

A: 58
Write down the solution for this math problem: Solve -7*y = -22*y + 45 for y.
answer: 3
QUESTION: Math problem: Solve 6*c + 546 = 528 for c.
ANS:
-3