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tim 3 so biet tong cua so thu nhat va so thu hai bang 162 tong cua so thu hai va so thu ba bang 136 va tong cua so thu nhat va so thu ba la 148
Cho 3 so co tong la 5020.Biet so thu nhat bang 3/4 so thu hai,so thu hai bang 1/3 so thu ba .Tim 3 so do.
tong cua hai so bang 156 tim hai so do biet rang 1/3 so thu nhat bang 2/7 so thu hai
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Tong ba so la 2068. Biet so thu hai lon hon tong cua so thu nhat va so thu ba la 124, so thu ba cong them 502 don vi thi bang so thu nhat. Tim ba so do
Cho mot phet cong cong co so hang thu nhat hon so hang thu hai la 15 don vi .Biet tong cua so hang thu nhat so hang thu hai va tong bang 682. Tim so hang thu hai cua tong
Tim 3 so biet tong cua so thu nhat va so thu hai la 50, tong cua so thu hai va so thu ba la 42 va tong cua so thu nhat va so thu ba la 56.
Tong cua 3 so la 1978. So thu nhat hon tong hai so kia la 58 don vi. Neu bot o so thu hai di 36 don vi thi so thu hai se bang so thu ba. Tim 3 so do.
tong cua ba so la 39 so thu nhat bang 2 phan 5 so thu hai so thu ba hon so thu nhat la 9 tim ba so do
Mot phep cong co hai so hang la so chan lien tiep .Tong cac so :so hang thu nhat so hang thu hai va tong bang 276.Tim phep cong do biet so hang thu nhat lon hon so hang thu hai