Question

2,5•(-2х+7y-0,4z+0,2)​

Answer 1

Ответ:

$2.5( - 2x + 7y - 0.4z + 0.2) = - 5x + 17.5y - z + 0.5$

Answer 2

-5x+17,5-1z+0,5
-5x-z=-18

Answer 3

It looks like you want to multiply the expression $2.5 \times (-2x + 7y - 0.4z + 0.2)$. To do this, you distribute the 2.5 to each term inside the parentheses:

$2.5 \times (-2x + 7y - 0.4z + 0.2) = -5x + 17.5y - 1z + 0.5$