Răspunsuri

2014-05-07T11:59:57+03:00
P=l+l+L+L
2l+2L=86
2(l+L)=86
l+L=43

L=l+3
l+l+3=43
2l=43-3
2l=40
l=20
L=l+3
L=20+3
L=23