abcdmnx2=cdmnab
(abx10000+cdmn)x2=cdmnx100+ab
abx20000+cdmnx2=cdmnx100=ab
abx19999+cdmnx2=cdmnx100(2 vế bớt ab)
abx1999 =cdmnx98 ( 2 vế bớt cdmn x2)
abx2857 = cdmnx14nên ab=14 cdmn=2857
Vậy a=1 b=4 c=2 d=8 m=5 n=7
ong mat co the bay duoc voi van toc 8km/gio. Tinh quang duong bay duoc cua ong mat trong 15 phut
ai lam dau tien ma lam dung thi minh moi tick do nha
An va Binh co tat ca 15.000d. Hai ban ru nhau di mua bim. An mua het 3.200d. Binh mua het 3.800d. Sau khi mua so tien cong lai cua Binh chi = 1/3 so tien con lai cua An. Hoi troc khi mua moi ban co bao nhieu tien?
ai lam xong dau tien thi tich phai lam day du nua. Lam on di 6.30p la minh phai di hoc roi
bac minh lam mot cong viec het 8 gio bac tam cung lam cong viec ay het 5gio dau tien bac minh lam duoc 4 gio thi bac tam den lam hoi sau bao nhieu lau thi hai bac lam xong cong viec
Hai nguoi tho cung lam mot cong viec va duoc linh 180.000 dong tien cong.Neu nguoi thu nhat lam mot minh thi sau 9 gio thi xong.Neu nguoi thu hai lam trong 12 gio thi xong. Dau tien nguoi thu nhat lam mot so gio roi de nguoi thu hai lam tiep den khi xong cong viec.Vi vay tong so thoi gian la 10 gio.Hoi moi nguoi duoc bao nhieu tien cong?
abcd+a,bcd+ab,cd+abc,d=1460,965
3 nguoi dau tien lam thi minh tick cho
123 : x + x = 4,5
ai tra loi dau tien minh se tick >_<
minh can gap lam ! thank you ^_^
me cho an mot so tien .An mua sach het 2/3 so tien me cho va mua vo het 3/4 so tien con lai An con du 3000 dong . Hoi luc dau An co bao nhieu tien ?
3 nguoi tra loi dau tien minh like cho
ai duoc minh like thi like lai cho minh nhe
mot nguoi tho xay phai xay mot buc tuong dai 6 m, rong 0,2m , cao 3m thi can phai dung bao nhieu vien gach dai 2 dm ,cao 0,5 dm , rong 1 dm . (Cac mach ho coi nhu khong dang ke )
ai lam nguyen duoc bai nay dau tien minh tick cho nha ?
hai nguoi tho lam chung mot cong viec . Neu nguoi thu nhat lam mot minh thi 16 gio moi xong . neu nguoi thu hai lam mot minh thi 24 gio moi xong . dau tien nguoi thu nhat lam mot thoi gian roi giao cho nguoi thu hai lam not cho con lai . tong so thoi gian hai nguoi lam la 19 gio . hoi moi nguoi da lam may thoi gian
