\(a+b+c+d=\frac{2008}{2009}+\frac{2009}{2008}+\frac{1}{2009}+\frac{2007}{2008}\\ =\frac{2009}{2009}+\frac{4016}{2008}=1+2=3\)
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Các câu hỏi tương tự
tính phép tính sau:
\(\frac{2008}{2009}-\frac{2009}{2008}+\frac{1}{2009}+\frac{2007}{2008}\)
tính nhanh : \(\frac{2007}{2008}\times\frac{1}{2009}+\frac{2007}{2008}:\frac{2009}{2008}+\frac{1}{2008}\)
Cho a=2008/2009 b=2009/2008 c=1/2009 d=2007/2008. Tính a-b+c+d
Bài 1 ; Cho a=2008/2009:b=2009/2008:c=1/2009:d=2007/2008. Tính a-b+c+d
\(C=\frac{2010+\frac{2009}{2}+\frac{2008}{3}+...+\frac{2}{2007}+\frac{1}{2008}}{\frac{1}{2}+\frac{1}{3}+\frac{1}{4}+...\frac{1}{2008}+\frac{1}{2009}}.\)
cho a =2008/2009;b=2009/2008;c=1/2009;d=2007/2008.tính a-b+c+d
tính nhanh
a) \(\frac{1999x2001-1}{1998+1999x2000}x\frac{2007}{2008}\)
b)\(\frac{2008x2009-2007}{2008+2007x2008}x\frac{2009}{2008}\)
So sánh :
B) \(\frac{2006}{2007}+\frac{2007}{2008}+\frac{2008}{2009}+\frac{2009}{2006}vs4\)
Tính \(A=\frac{2008+\frac{2007}{2}+\frac{2006}{3}+\frac{2005}{4}+...+\frac{2}{2007}+\frac{1}{2008}}{\frac{1}{2}+\frac{1}{3}+\frac{1}{4}+...+\frac{1}{2008}+\frac{1}{2009}}\)