C1: 2/3 x (4/5 x 5/6) = 2/3 x 2/3 = 4/9
C2: (2/3 x 4/5) x 5/6 = 8/15 x 5/6 = 4/9
\(\frac{2}{3}x\frac{4}{5}x\frac{5}{6}\)
\(=\frac{8}{15}x\frac{5}{6}\)
\(=\frac{4}{9}\)
tinh bang 2 cach ;a; mo ngoac 1phan 3 cong2 phan 5 dong ngoac nhan 3phan 4 b;mo ngoac 7phan 9 cong 2phan 3 dong ngoac chia 5phan 6
Bai 1 Tim x
A) x nhan 4 phan 5 = 1 phan 2 nhan 1 phan 3
B ) x : 2 phan 5 = 2phan 3 + 1 phan 2
4 nhan 2phan 7
3 phan 11 nhan 2
22nhan 5phan 11
giup toi
co ba doi nhan phan bon ve cham soc cay, ca ba doi nhan so phan bang nhau , lan thu nhat doi mot nhan 2000 kg , doi hai nhan 30 ta , doi ba nhan 4 tan .ca ba doi deu nhan tat ca 36 tan phan . hoi doi mot nhan bao nhieu tan phan ?
rut gon phan so
15 nhan 64 phan 16 nhan 40
2 nhan 3 nhan 5 phan 70
21 nhan 45 phan 9 nhan 7 nhan 5 nhan 3
TINH BANG CACH NHANH NHAT
2*6*11/33*24
21*45/9*7*5*3
DAU SAO LA DAU NHAN NHE.
CON DAU GACH LA GACH PHAN SO NHE.
mot kho hang ngay dau nhan duoc 60 tan , ngay thu hai nhan duoc bang 1 phan 3 so tan ngay dau . ngay thu ba nhan duoc it hon ngay dau 5 tan . hoi trung binh moi ngay kho thoc hang do nhan duoc bao nhieu tan hang ?
5 phan 7 nhan 7phan 8 bang ? help me
