Răspunsuri

2014-11-07T10:59:51+02:00
A=1/4            |
2a=2/4=1/2    |  ⇒|2a-3|=3-2a
2a<3             | 
|2a+1|=2a+1
obt.:
(3-2a)+(2a+1)=3-1/2+1/2+1=se reduc termenii asemenea (adica -1/2 si +1/2) si obtinem: 3+1=4