$a, |-3|+|-2,65|-|0|$
$=3+2,65$
$=5,65$
$b, (-3) ^3 . 11^45+ (-3) ^ 3 . 4 ^45$
$=3^6.11^45.4^45$
$c, √25 . \frac{1}{10} + (-1/2) ^ 2$
$=5.\frac{1}{10}+\frac{1}{4}$
$=\frac{1}{2}+\frac{1}{4}$
$=\frac{3}{4}$
$d, -(23,5.5+19,6) + 5.23,5 - (6-19,6)$
$=-23,5.5-19,6+ 5.23,5 - 6+19,6$
$=5.(-23,5+23,5)+(19,6-19,6)$
$=5.0+0$
$=0$