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2014-10-12T15:24:39+03:00
A+b+c+d+e+f=120
a
a+2
a+4
a+6
a+8
a+10
Egalam partile 120-(2+4+6+8+10)=90
Aflam cat este o parte:90:6=15 a=15
a=15
b=15+2 b=17
c=15+4=19
d=15+6=21
e=15+8=23
f=15+10=25
P:15+17+19+21+23+25=120