Cho a/b la phan so toi gian CMR (a-2b)/b cung la phan so toi gian
Cho phan so a/b la phan so toi gian. Hoi a/a+b co phai la phan so toi gian ko
giúp mình với!!!!
neu a/b la phan so toi gian thi a/a+b co phai la phan so toi gian
Cho a/b la phan so toi gian
C/m a+b/b,b-a/b cung la phan so toi gian
CMR : Neu a/b la phan so toi gian thi phan so a/a+b cung la phan so toi gian (b va a+b khac 0).
cho a,b thuc N*,a/b la phan so toi gian.chung to a/a+b la phan so toi gian
cho A=3n+2/4n+3 cm A la phan so toi gian
cho A=3n+2/4n+3 cm A la phan so toi gian
1 hcn co dt la 8/15cm2.cd la 4/3 cm.
a,tinh chu vi hcn do
b,tim phan so toi gian a/b lon nhat(a,bthuoc N*)sao cho khi chia moi phan so 22/75,16/35 cho a/b ta duoc ket qua la so tu nhien