Răspunsuri

  • Utilizator Brainly
2014-09-15T14:30:46+03:00
A+a+2+a+4+a+6=72
4a+12=72
4a=72-12
4a=60
a=15

a+2=15+2=17
a+4=15+4=19
a+6=15+6=21

Deci numerele sunt : 15 , 17 , 19 , 21 
6 4 6
2014-09-15T14:33:15+03:00
A +b +c +d =72 
a ____/
b ____/ +2
c ____/ +2 +2
d ____/ +2 +2 +2
2 * 6 =12
72 -12 =60
60 / 4 =15 
a =15 
b =15 +2 =17 
c =17 +2 =19 
d =19 +2 =21
proba: 15 +17 +19+ 21 =72
1 5 1