Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
\(\frac{2006\times2007-2593}{2005\times2006+1419}\)
\(=\frac{2005\times2006+4012-2593}{2005\times2006+1419}\)
\(=\frac{2005\times2006+1419}{2005\times2006+1419}\)
\(=1\)
= 2006 x ( 2005 + 2 ) - 1997 / 2006 x 2005 + 2015
= 2006 x 2005 + 2006 x 2 -1997 / 2006 x 2005 + 2015
= 2006 x 2005 + 4012 - 1997 / 2006 x 2005 + 2015
= 2006 x 2015 + 2015 / 2006 x 2005 + 2015
= 1
Nhớ k nha
\(\frac{2006\times2007-1997}{2006\times2005+2015}=\frac{2006\times\left(2005+2\right)-1997}{2006\times2005+2015}\)
\(=\frac{2006\times2005+2006\times2-1997}{2006\times2005+2015}\)
\(=\frac{2006\times2005+4012-1997}{2006\times2005+2015}=\frac{2006\times2005+2015}{2006\times2005+2015}=1\)
\(\frac{2005\times2007-1}{2004+2005\times2006}\)
=\(\frac{2005\times\left(2006+1\right)-1}{2004+2005\times2006}\)
=\(\frac{2005\times2006+2005\times1-1}{2004+2005\times2006}\)
=\(\frac{2005\times2006+2005-1}{2004+2005\times2006}\)
=\(\frac{2005\times2006+2004}{2004+2005\times2006}\)
Ta thấy tử số và mẫu số giống nhau nên kết quả của biểu thức bằng 1
Li-ke cho mik nhé!
\(\frac{2005.2007-1}{2004+2005.2006}=\frac{2005.\left(2006+1\right)-1}{2004+2005.2006}=\frac{2005.2006+2005.1-1}{2004+2005.2006}=\frac{2005.2006+2004}{2004+2005.2006}=1\)
\(=\frac{2006x\left(2005+2\right)-1997}{2006x2005+2015}=\frac{2006x2005+4012-1997}{2006x2005+2015}=\frac{2006x2005+2015}{2006x2005+2015}=1\)
a) \(\frac{2005\cdot2006-1}{2006\cdot2004+2005}\)
\(=\frac{2004\cdot2006+2006-1}{2006\cdot2004+2005}\)
\(=1\)
b) \(27\left(\frac{171717}{272727}+\frac{373737}{363636}\right)\)
\(=27\left(\frac{17}{27}+\frac{37}{36}\right)\)
\(=27\cdot\frac{17}{27}+27\cdot\frac{37}{36}\)
\(=17+\frac{9\cdot3\cdot37}{9\cdot4}\)
\(=17+27,75=44,75\)
P/s : ko biết câu b có đúng ko nữa
\(\frac{2004.37+2004+2.2004+2004.59+2004}{324.321-201.324-101.324-18.324}\)
\(=\frac{2004.\left(37+1+2+59+1\right)}{324.\left(321-201-101-18\right)}\)
\(=\frac{2004.100}{324.1}\)
\(=\frac{200400}{324}\)
\(=\frac{16700}{27}\)
=4030052
sửa đề : \(\frac{2006\cdot2007-2008}{2005\cdot2006+2004}\)
\(=\frac{2006\cdot2005+2006\cdot2-2008}{2005\cdot2006+2004}\)
\(=\frac{2006\cdot2005+4012-2008}{2005\cdot2006+2004}\)
= 1