Răspunsuri

2014-11-15T23:33:08+02:00
1 nr-2n+1
2nr-2n+3
(2n+1+2n+3)/2=48
4n+4=48*2
4n=96-4
4n=92
n=23
1 nr=23*2+1=47
2nr=23*2+3=49
2014-11-15T23:33:33+02:00
(a+a+2)/2=48
2a+2=48*2
2a+2=96
2a=96-2
2a=94
a=94:2
a=47
b=47+2=49