Помогите с математикой!!!!!!!!!!!!!

$|23|=23 \\\ |-3|=3 \\\ |0|=0 \\\ |2.5|=2.5 \\\ |-3 \frac{2}{3} |=3 \frac{2}{3} \\\ |-2|=2$

Если $|x|=3 \frac{1}{3}$ и $x<0$ , то $x=-3 \frac{1}{3}$

$|-4.1|:|-41|=4.1:41=0.1$

$|2.5|\cdot|-4|-| 2\frac{1}{3} |\cdot|- \frac{3}{4} |=2.5\cdot4- \frac{7}{3} \cdot \frac{3}{4}=10-1.75=8.25$

$|-18 \frac{1}{3} |=18 \frac{1}{3} \\\ |41 \frac{1}{3} |=41 \frac{1}{3} \\\ n=41-18=23$

$|2x-1|=4 \\\ 2x=-1=\pm4 \\\ 2x=1\pm4 \\\ x= \frac{1\pm4}{2} \\\ x_1=2.5 \\\ x_2=-1.5$