Question

-(3,1c-1,7d)-(3d+1,2c)+(2,1c+1,4d) bxbdbfh​

Answer 1

Пошаговое объяснение:

$-(3,1c-1,7d)-(3d+1,2c)+(2,1c+1,4d)=\\=-3,1c+1,7d-3d-1,2c+2,1c+1,4d=\\=-2,1c+0,1d$

Answer 2

It appears that you've provided an expression with variables 'c' and 'd' but haven't specified what operation you'd like to perform on this expression (e.g., simplify, solve, factor, etc.). Please clarify what you'd like to do with this expression, and I'll be happy to assist you further.