question: Teacher asked me this: Solve -21 = 10*f - 61 for f.
++++++++++
answer: 4
Solve 0 = -8*l - 3 + 11 for l.
Solve this plz.

A: 1
QUESTION: Math problem: Solve 5 = -t + 7 for t.
ANS: 2
Q: What is the solution?
Solve 20*k + 8*k = 3*k for k.

A: 0
Write down the solution for this math problem: Solve 899*q - 869*q - 90 = 0 for q.
answer: 3
Write down the solution for this math problem: Solve 142*v + 386 - 317 = -641 for v.
answer:
-5