question: Teacher asked me this: Solve 21*x + 14*x - 280 = 0 for x.
++++++++++
answer: 8
Solve 311*c - 7718 = -143*c for c.
Solve this plz.

A: 17
QUESTION: Math problem: Solve 42*c + 38 = -130 for c.
ANS: -4
Q: What is the solution?
Solve -235 = 32*c - 11 for c.

A: -7
Write down the solution for this math problem: Solve -7210*o + 7225*o = -30 for o.
answer: -2
Write down the solution for this math problem: Solve -424*r = -404*r + 200 for r.
answer:
-10