question: Teacher asked me this: Solve -21*l = 38*l - 251 - 634 for l.
++++++++++
answer: 15
Solve 0 = k - 44 + 44 for k.
Solve this plz.

A: 0
QUESTION: Math problem: Solve 795*r + 174 - 21518 = 6481 for r.
ANS: 35
Q: What is the solution?
Solve -298*r + 278*r - 20 = 0 for r.

A: -1
Write down the solution for this math problem: Solve -70*c - 563 = -73 for c.
answer: -7
QUESTION: Math problem: Solve -106*z = -62*z + 88 for z.
ANS:
-2