Răspuns:
a-primul numar
b-al doilea numar
c-al treilea numar
a+b+c/3=6.5
a+b+c=6.5*3
a+b+c=19.5
b=3a
c=3b=3*3a=9a
=> a+3a+9a=19.5
13a=19.5
a=19.5/13
a=1.5
b=3*1.5=4.5
c=9*1.5=13.5
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Răspuns:
a-primul numar
b-al doilea numar
c-al treilea numar
a+b+c/3=6.5
a+b+c=6.5*3
a+b+c=19.5
b=3a
c=3b=3*3a=9a
=> a+3a+9a=19.5
13a=19.5
a=19.5/13
a=1.5
b=3*1.5=4.5
c=9*1.5=13.5