Question

-(2,9-а)-8,1 = ?????​

Answer 1

Ответ:

Пошаговое объяснение:

-(2,9-а)-8,1=-2,9+а-8,1=а-11

Answer 2

To simplify the expression $-(2,9 - a) - 8,1$, first, let's deal with the parentheses. Inside the first set of parentheses, we have $2,9 - a$. Since there is a comma in this expression, I'll assume that you meant it to be a decimal point. So, $2,9 - a$ means $2.9 - a$.

Now, substitute $2.9 - a$ back into the expression:

$-(2.9 - a) - 8.1$

To simplify this further, distribute the negative sign inside the parentheses:

$-2.9 + a - 8.1$

Combine like terms (the constants -2.9 and -8.1):

$a - 11$

So, $-(2.9 - a) - 8.1$ simplifies to $a - 11$.