tong cua 3 so bang 280 biet so thu nhat bang 3/4 so thu hai va so thu hai bang 6/7 so thu ba. tim so thu nhat
tong cua 3 so la 410 tim so thu ba biet 2/5 so thu nhat bang 1/4 so thu hai va bang 4/15 so thu ba
cho 3 so , so thu hai bang 1/4 so thu nhat va so thu nhat bang 1/2 so thu ba . tim so thu ba biet tong ba so 1950
cho 3 so , so thu hai bang 1/4 so thu nhat va so thu nhat bang 1/2 so thu ba . tim so thu ba biet tong ba so 1950
tong cua 3 so bang 621 biet tong cua so thu nhat va so thu hai hon so thu ba 121 don vi so thu hai hon so thu nhat 21 don vi tim so thu hai
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.
Tong cua hai so bang 621.biet tong cua so thu nhat va so thu hai hon so thu ba la 121 doi vi.so thu hai hon so thu nhat 21 don vi. Tim so thu nhat.
cho 3 so , so thu hai bang 1/4 so thu nhat va so thu nhat bang 1/2 so thu ba.hay tinh so thu ba biet tong cua ba so la 1950
Trung binh cong cua ba so bang 680, biet rang so thu ba gap ruoi so thu hai, so thu nhat bang 60% so thu ba. Tim so thu nhat