Răspunsuri

2014-05-13T14:01:04+03:00
P=l+l+L+L=146
2l+2L=146 /:2
l+L=73
L=16+2l

16+2l+l=73
3l=73-16
3l=57
l=19

L=16+2*19
L=16+38
L=54