Răspuns :
(a,b,c,d)~(6;8,1;10)
a+b+cd=65
a supra6=b supra8=c supra1=d supra 10=k
a supr 6=k=a6k
b=8k
c=k
d10k
a+b+c+d=65
6k+8k+k+10k=65
25k=65
k=65:25
k=2.6
a=2.6x6
a=15.6
b=2.6x8
b=20.8
c=2.6
d=2.6x10
d=26
a+b+cd=65
a supra6=b supra8=c supra1=d supra 10=k
a supr 6=k=a6k
b=8k
c=k
d10k
a+b+c+d=65
6k+8k+k+10k=65
25k=65
k=65:25
k=2.6
a=2.6x6
a=15.6
b=2.6x8
b=20.8
c=2.6
d=2.6x10
d=26