phân số lớn:
\(\left(\frac{17}{20}+\frac{7}{20}\right):2\)=3/5
phân số bé:
17/20-3/5=1/4
phân số lớn:
\(\left(\frac{17}{20}+\frac{7}{20}\right):2\)=3/5
phân số bé:
17/20-3/5=1/4
tim 2 phan so biet tong cua chung la 17/20 hieu cua chung la 7/20
Tim hai so phan so biet tong cua chung bang 17/20 va hieu cua chung bang 7/20.
tim hai phan so biet tong cua chung bang 17/20 va hieu cua chung bang 7/20
so be
so lon
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 2 phan so biet tong cua chung bang 17/20
va hieu cua chung bang 7/10
biet tong 20% cua so thu nhat va 50% so thu hai la 12,64 va biet hieu cua hai lan so thu nhat va so thu hai la 12,4 tim hai so do
giai ra giup minh
1. tbc cua 3 so la 19/60 .neu gap so thu nhat len 4 lan thi tbc cua chung se la 13/20 .tim 3 so , biet so thu hai hon so thu ba 1/6
2. trong mot phep tru co tong so bi tru ,so tru va hieu la 1998.biet hieu so bang 4/5 so tru .hay tim so bi tru va so tru , hieu
tim hai so thap phan co tong la 26,54 biet neu doi dau phay so thu nhat sang phai 2 hang ta duoc so moi va biet hieu cua so moi va so thu hai la 1118.8
cho hai so thap phan co hieu la 14,6.Tim hai so do , biet rang neu cung bot ca hai so do 2,5 don vi thi duoc hai so co tong la 142