Question

Calculați:

$a) |-\frac{7}{2}| + | \frac{3}{2} | \\ \\ b) \\ \\ | - \frac{1}{3} | + | \frac{8}{3} | \\ \\ c) \\ \\ | \frac{11}{4} | - | - \frac{3}{4} | \\ \\ d) \\ \\ | - \frac{21}{5} | - | 3 - \frac{1}{5} | \\ \\ e) \\ \\ | - \frac{25}{3} | - | - 4 \frac{1}{3} | \\ \\ f) \\ \\ - | \frac{13}{6} | + | - 7 \frac{1}{6} |$

Este urgent!!!

Answer 1

|x|={x, daca x=>0
      {-x ,daca x<0
7/2 +3/2 = 10/2 =5
1/3+8/3 = 9/3 =3
11/4 -3/4 = 8/4=2
21/5 -14/5 = 7/5
25/3 - 13/3 =12/3=4
-13/6+43/6 = 30/6= 5


La d) cred ca era |-21/5|-|3 1/5|  
21/5- 16/5= 5/5 =1