Question

-21 × ( -х -8) -28,4 =​

Answer 1

Ответ:

-21×(-x-8)-28,4=21x+168-28,4=21x+139,6.

Answer 2

To solve the given expression, let's substitute "х" with a variable, such as "x". Then we can simplify the expression step by step:

-21 × (-x - 8) - 28.4

First, let's distribute the -21 to the terms inside the parentheses:

= -21 × -x - 21 × (-8) - 28.4

= 21x + 168 - 28.4

Next, combine like terms:

= 21x + 139.6

So, the simplified expression is 21x + 139.6.