so be la :
72:(5 +1 ) =12
so lon la :
72 - 12 = 60
so be la :
72:(5 +1 ) =12
so lon la :
72 - 12 = 60
tong cua 2 so la 72. tim haiso do, biet rang neu so lon giam 5 lan thi duoc so be
Tong cua 2 so bang 91 .Tim 2 so do,biet rang neu giam di so lon 6 lan thi duoc so be
tong cua hai so la 72. Tim hai so do , biet rang neu so lon giam 5 lan thi duoc so be ?
giai day du co so do
Tong cua hai so la 45 tim hai so do biet rang neu giam so lon di 4 lan thi duoc so be?
biet trung binh cong cua hai so bang 78. tim hai so do ,biet rang so lon gap 5 lan so be
Tong cua hai so bang 64.Tim hai so do.,biet rang neu so be gap len 3 lan thi duoc so lon
tim hai so biet tong cua chung bang 324 va giam so lon di 5 lan thi duoc so be . Ly luan dau tien
hieu cua 2 so la 738. tim hai so do , biet rang so thu nhat giam di 10 lan thi duoc so thu hai
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