Cho 2 phan so co tong bang -3 va tich bang 12/5. Tinh tong cac so nghich dao cua 2 phan so do

1.cho hai phan so co tong bang -3 va tich bang 12/5. tinh tong cac nghich daao cua hai phan so do

2.cho hai phan so toi gian a/b va c/d. biet a/b+c/d E z. chung minh /b/=/d/

cho 2 phan so co tong bang -3 va tich bang 12/5 tinh tong cac so ngich dao cua 2 phan so

cho 2 phan so co tong bang 2015 lan tich cua chung

tinh tong cac phan so nghich dao cua chung

tim so co 3 chu so biet rang nghich dao cua tong 3 chu so do bang 1 phan 1000 so da cho

hai so tu nhien co tong bang 2011 va giua chung co tat ca 9 so chan tim hai so do

hai so tu nhien co tong bang 2009 va giua chung co tat ca 5 so le

tim hai so tu nhien co tong cua chung bang 636 va giua chung co tat ca 11 so tu nhien khac

tim hai phan so biet tong cua bang 5/6 va hieu cua chung bang 1/6

tim hai phan so biet tong cua chung bang 17/20 va hieu cua chung bang 7/20

tim 1 phan so biet tong cua tu  tu so va mau so cua phan so do bang 135 va biet phan so do co gia tri bang 2/3

tim mot phan so biet tong cua tu so va mau so cua phan so do bang 162 va biet phan so do co gia tri bang 4/5 

tim phan so do

tim mot phan so biet tong cua tu va mau so cua phan so do bang 135 va biet phan so do co gia tri bang 2/3

PHAN SO DO LA...........................