question: Teacher asked me this: Solve -57 = -42*c + 21*c + 18*c for c.
++++++++++
answer: 19
Solve 206*j - 38*j - 3024 = 0 for j.
Solve this plz.

A: 18
QUESTION: Math problem: Solve 9*u + 4*u - 39 = 0 for u.
ANS: 3
Q: What is the solution?
Solve 0 = 18*c + 199 - 55 for c.

A: -8
Write down the solution for this math problem: Solve -12 + 672 = 60*l for l.
answer: 11
QUESTION: Math problem: Solve 151 = -7591*r + 7599*r - 105 for r.
ANS:
32