To simplify the expression 2a-10a-av+5b/3a-14a-5, first factor out a common term and then simplify the fractions:

2a(-5a-v) +5b / 3a(-5a-5)
= 2a(-5a-v) + 5b / 3a(-5a-5)
= (10a^2 + 2av + 5b) / 3a(-5a-5)

Therefore, the simplified expression is:
(10a^2 + 2av + 5b) / 3a(-5a-5)