question: Teacher asked me this: Solve -9*x = -12*x - 21 for x.
++++++++++
answer: -7
Solve -4994*o = -5139*o + 145 for o.
Solve this plz.

A: 1
QUESTION: Math problem: Solve 45*r = 52*r - 35 for r.
ANS: 5
Q: What is the solution?
Solve 0 = 8*i - 13*i + 15 for i.

A: 3
Write down the solution for this math problem: Solve -5*w - 8*w - 32*w = 90 for w.
answer: -2
Q: Solve:
Solve -10*n - 26959 = -27159 for n.

A:
20