Răspunsuri

2014-03-27T20:13:15+02:00
A+b+c+d=92
b=a+2
c=a+4
d=a+6
inlocuim:a+a+2+a+4+a+6=92
4a+12=92
4a=92-12
4a=80
a=80:4
a=20
inlocuim;d=a+6=>d=20+6
d=26