Question

10,2:b =3,4 crochno nojno reshit

Answer 1

10,2 : b = 3,4
b = 10,2 : 3,4
b = 3

Answer 2

It seems like you've provided a series of numbers and symbols, but it's not clear what you're asking or trying to convey. Could you please provide more context or clarify your question? I'd be happy to help if I understand your request better.