question: Teacher asked me this: Solve -1975*u + 1970*u - 100 = 0 for u.
++++++++++
answer: -20
Solve 19 = c + 21 for c.
Solve this plz.

A: -2
QUESTION: Math problem: Solve 34*x - 16 = 18*x for x.
ANS: 1
Q: What is the solution?
Solve -8*x = -27*x + 95 for x.

A: 5
Write down the solution for this math problem: Solve 3*m = 7 - 13 for m.
answer: -2
QUESTION: Math problem: Solve 0 = 10*d + 1 + 29 for d.
ANS:
-3