so sanh hai phan so A=2/5+2/15+4/215-422/2015:17/5+27/5+239/215-4.517/2015 va B=2/84+2/112+1/72+4/360
So sanh 2 phan so
a)1/5 va 1/7 b)-3/4 va 2/5 -5/7 va -3/14
cho a la so tu nhien
so sanh 2a+2017/a+2013 va
a+1/a+5
la cau hoi phan so / la phan hoac tren
So sanh 17/19 va 1717/1919
so sanh
n phan n+2 va n+3 phan n+5
SO sanh hai phan so sau ; -31/19 va -21/19
cho phan so a/b >1 . Hay so sanh hai phan so a/b va a+m / b+m
( m la so tu nhien khac khong )
giup mk nha cac ban
so sanh hai phan so 31/40 va 186/241 bang nhieu cach
so sanh phan so a.-22/35 va -105 / 177
b. (3/8)5 va (5/243)3