lấy 1-13/15=2/15
lấy 1-23/25=2/25
2/15>2/25 nên 13/15<23/25
lấy 1-13/15=2/15
lấy 1-23/25=2/25
2/15>2/25 nên 13/15<23/25
ko quy dong mau so:
23/28 voi 24/27
ko quy dong mau hay so sanh :
2111/2012+2012/2013+2013/2011 voi 3
Quy dong mau cac phan so
13/30,-4/15,9/20
quy dong mau so roi rut ra nhan xet:
13/55;47/73
Giup minh voi!
Rut gon roi quy dong mau cac phan so sau:
3 . 4 + 3 . 7/6 .5 + 9 va 6 . 9 - 2 . 17/63. 3 - 119
cong ca tu va mau cua phan so 15 phan 23 voi cung 1 so tu nhien n roi rut gon ta duoc phan so 2 phan 3 .Vay n =
BAI 1: A] QUY DONG MAU HAI PHAN SO SAU : -3 / 16 ; 5/24;-21/56
B] TRONG CAC PHAN SO DA CHO , PHAN SO NAO CHUA TOI GIAN ?
TU NHAN XET DO , TA CO THE QUY DONG MAU CAC PHAN SO NAY NHU THE NAO ?
quy dong mau so cac phan so
3/8 va5/27
Quy dong mau nhieu phan so: 11/120 va 7/40