Răspuns :
a+b+c=660
c=2×a
b=3×a
a +2×a +3×a= 660
3a(2+3) = 660
3a ori 5 =660
3a=660:5
3a=132
a =44
b=44×3
b =132
c =44×2
C=88
c=2×a
b=3×a
a +2×a +3×a= 660
3a(2+3) = 660
3a ori 5 =660
3a=660:5
3a=132
a =44
b=44×3
b =132
c =44×2
C=88