Răspunsuri

2014-11-04T19:31:33+02:00
A,b,c,d=nr nec
a+b+c+d=92
b=a+1
c=a+2
d=a+3
a+a+1+a+2+a+3=92
4a+6=92
4a=92-6
4a=86
a=86:4
a=21,5
d=21,5+1=22,5