Răspunsuri

2014-09-14T14:14:07+03:00
 a+b+c+d=72
a=15
b=17
c=19
d=21
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  • Utilizator Brainly
2014-09-14T14:16:01+03:00
A+a+2+a+4+a+6=72
4a+12=72
4a=72-12
4a=60
a=60:4
a=15

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

Deci numerele sunt : 15 , 17 , 19 , 21 .




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