Răspuns :
a+b+c=63<=>3c+c/2+c=63<=> (aduci la acelasi numitor) (6c+c+2c)/2=63=> 9c=126=>c=14=>a=42; b=7
a=3c
b=c/2
a=3c
b=c/2
a+b+c=63; a=3*c;b=c/2=>3c+c/2+c=63=>6c+c+2c=63*2=> 9c=126=> c=14=> a=14*3=42; b=14/2=7