tim mot phan so,biet rang neu lay phan so do nhan voi 3/5 roi tru di 1/5.

Tim mot phan so co mau so bang 11, biet rang khi lay tu so cua phan so do tru di 18 va mau so cua phan so do nhan voi 7 thi duoc phan so moi co gia tri bang phan so can tim.Phan so do la?

tim mot phan so , biet rang phan so  do nhan voi 9 roi tru di 47/8 thi duoc 13/2

Cho phan so a/b co gia tri bang 3/4 neu giam mau so di 12 don vi va giu nguyen tu so thi duoc phan so moi co gia tri bang 6/7 tim gia tri cua phan so a/b

cho a/b bang 4/5 neu cong them 33 vao tu so va giu nguyen mau son thi duoc phan so moi la 25/41

ai nhanh minh tick 

minh can gap chieu nay nop roi xin cac ban giup minh

tim mot phan so biet rang neu lay 12/5 tru di phan so do chia cho 5/7 thi duoc 12/5

1.Cho so N la so co hai chu so chia het cho 3.Neu viet xen so 0 vao giua hai chu so do roi cong no voi hai lan chu so hang chuc cua so N ta duoc so moi gap 9 lan so N.Tim so do

2.Tong hai so thap phan la 60,1.Neu dich dau phay cua so nho sang ben phai mot hang roi dem tru di so lon thi ta duoc 219,52.Tim hai so do.

3.Tim so co hai chu so biet neu ta them so 33 vao giua hai chu so do thi duoc mot so moi gap so phai tim 89 lan.

Tim mot phan so toi gian biet rang neu cong mau so vao tu so va gii nguyen mau so thi gia tri cua phan so gap len 9 lan 

Van nao giup minh voi minh dang can 

 Ban nao lam dyoc minh xin cam on nhieu

tim mot phan so khi biet rang phan so do nhan voi 9roi tru di 47/8 thi duoc 13/5

khi thuc hien phep cong mot so tu nhien voi mot so thap phan mot hoc sinh da bo quen dau phap va thu duoc ket qua la 3993 biet tong dungg cua phep tinh do bang 2031,81 tim so thap phan

giai giup minh nhe minh can gap lam roi minh tick cho