Question

0,5(1,6х-6,4у)-2,4(1,5х+у), якщо х=3 , у=(-4,5).

Answer 1

Ответ:

Смотри решение на фото

Answer 2

Alright, let's substitute the values of x and y into the expression:

$0.5(1.6x - 6.4y) - 2.4(1.5x + y)$

For $x = 3$ and $y = -4.5$:

$0.5(1.6 \times 3 - 6.4 \times (-4.5)) - 2.4(1.5 \times 3 - 4.5)$

Now, let's do the calculations:

$0.5(4.8 + 28.8) - 2.4(4.5 - 4.5)$

$0.5(33.6) - 2.4(0)$

$16.8$

So, the result is $16.8$.