Răspunsuri

2014-08-30T20:49:47+03:00
| 1/2 -1/3|  + | 1/4 -1/3|   aducem la acelasi numitor

| (3-2)/6 | + | (4-3)/12|=

= | 1/6| + | 1/12|=

= 1/6 + 1/12=  ( 2+1)/12= 3/12= 1/4
1 5 1
2014-08-31T00:11:24+03:00
|1/2-1/3|+|1/4-1/3|=|3/6-2/6|+|3/12-4/12|=1/6+|-1/12|=1/6+1/12=2/12+1/12=3/12=1/4