cho 3 so co tong bang 307.5 biet 1/3 so thu nhat bang 40% so thu hai bang 50% so thu ba tim so thu nhat.
hai so co tong bang 112,5. biet 1/2 so thu nhat bang 1/3so thu hai .tim so thu nhat la?
hai so co tong bang 112,5 . Biet 50% so thu nhat bang 40% so thu 2 . Tim so thu nhat
Hai so co tong bang 157.5 . biet 50% so thu nhat nhat bang 2\3 so thu 2.tim so thu nhat?
Tong cua 3so bang 621.biet tong cua so thu nhat va so thu hai hon so thu 3 , 121 don vi.So thu hai hon so thu nhat 21 don vi . Tim so thu nhat?
cho 3 so co tong bang 441.biet 30%so thu nhat bang 50% so thu 2 va bang 150% so thu 3.tim so thu nhat
hai so co tong bang 112,5.Biet 50% so thu nhat bang 40% so thu hai.So thu nhat la
Cho 3 so co tong la 441.biet 30% so thu nhat bang 50% so thu hai va bang 150% so thu ba.tim so thu nhat
Hai so co tong bang 112,5. Biet 50% so thu nhat bang 40% so thu hai. So thu hai la.....