Gọi số lớn là a, số bé là b
=> a + b = 54
=> a + 2 = b + 10
=> a - b = 10 - 2 = 8
Ta có tổng 2 số là 54, hiệu là 8
Số lớn là : ( 54 + 8 ) : 2 = 31
Số bé là : 54 - 31 = 23
Đ/s:...........
tong cua hai so la 25750.neu them so be 125 don vi va giam so lon 90 don vi thi so be bang 2/3 so lon tim hai so do
tong cua hai so la 25750.neu them so be 125 don vi va giam so lon 90 don vi thi so be bang 2/3 so lon tim hai so do .nho viet loi giai ra ro rang nhe cac ban
hieu hai so la 784 tim hai so do biet neu them vao so lon 1230 don vi thi tong cua chung bang 14682
Hieu cua 2 so la12352 Neu them vao so lon 5634 don vi va them vao so be 1206 don vi thi tong cua 2 so la 25382 Tim 2 so ban dau
tong cua 2 so la 3247 neu tang so thu nhat them 542 don vi tang so thu hai them 123 don vi thi duoc hai so bang nhau tim so thu nhat
tong cua 2 so la so lon nhat co 3 chu so chia het cho 5.biet neu them va so be 35 don vi thi ta duoc so lon. tim moi so.
tim 1 phan so, biet rang neu cong them 2 don vi o tu so va bot 2 don vi o mau so thi duoc phan so moi co tong tu so va mau so la 97.Neu them vao tu so 7 don vi va bot 8 don vi o mau so thi duoc phan so moi co gia tri bang 1
cau 1 ;2 so co tong la 346 biet so be la so co hai chu so va khi viet them chu so 3 vao truoc so be thi duoc so lon tim so be
cau 2 ; tong 2 so la 390 so be l¸o co 2 chu so va neu viet them chu so 3 vao truoc so be thi duoc so lon tim so lon
cau3;chu vi 1 khu dat hinh chu nhat =68 chieu dai hon chieu rong16m nguoi ta trong rau tren khu dat do TB cu 2m vuong trong duoc 2 kg rau tinh so rau o khu dat do
cau4 ; TBCcua 2 so la so nho nhat co 3chu so khac nhau biet so lon lon hon TBCcua 2so la 24 don vi tim so be va so lon
hieu cua hai bang 784 tim hai so do biet rang neu them vao so lon hon 1230 don vi thi tong cua chung bang bang 14682
