Răspunsuri

2014-06-09T22:02:48+03:00
A+1+a+3+a+5=831

3a+9=831

3a=831-9

3a=822

a=274

a+1=275
a+3=277
a+5=279
2014-06-09T22:05:20+03:00
A+1+a+3+a+5=831
3a+9=831
3a=831-9
3a=822
a=822:3
a=274
a+1=274+1=275 (primul numar)
a+3=274+3=277 (al doilea numar)
a+5=274+5=279  (al treilea numar)