Question

Выполните действия
-3,4x2,7
-1 3/11x(-2 2/21)
-12,72:(-0,4)
15,45:(-15)

Answer 1

$- 3.4 \times 2.7 = - 9.18 \\ \frac{ - 13}{11} \times \frac{ - 22 }{21} = \frac{286}{231}$
$- 12.72 \div ( - 0.4) = 31.8 \\ 15.45 \div ( - 15) = - 1.03$

Answer 2

- 3,4 *2,7= - 9,18
- 1 3/11 *(- 2 2/21)=14/11 * 44/21=2/1 *4/3=8/3= 2 2/3
-12,72 :( - 0,4)= 31,8
15,45: (-15)= - 1,03