Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
= 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
\(\frac{2006\times2007-1997}{2006\times2005+2015}=\frac{2006\times\left(2005+2\right)-1997}{2006\times2005+2015}\)
\(=\frac{2006\times2005+2006\times2-1997}{2006\times2005+2015}\)
\(=\frac{2006\times2005+4012-1997}{2006\times2005+2015}=\frac{2006\times2005+2015}{2006\times2005+2015}=1\)
A = 2013 x 2012 - 1997
A = ( 2013 x 2012 ) - 1997
A = 4050156 - 1997
A = 4048159
B = 2012 x 2011 + 2015
B = ( 2012 x 2011 ) + 2015
B = 4046132 + 2015
B = 4048147
\(=\frac{2006x\left(2005+2\right)-1997}{2006x2005+2015}=\frac{2006x2005+4012-1997}{2006x2005+2015}=\frac{2006x2005+2015}{2006x2005+2015}=1\)
\(\frac{2006\cdot2007-1997}{2006\cdot2005+2015}\)
\(=\frac{2006\cdot2005+2006+2006-1997}{2006\cdot2005+2015}\)
\(=\frac{2006\cdot2005+4012-1997}{2006\cdot2005+2015}\)
\(=\frac{2006\cdot2005+2015}{2006\cdot2005+2015}=1.\)
Đầu bài như này mới đúng mk sửa cho rồi nha
1996 x 1997 + 1998 x 3 + 1994 / 1997 x 1999 - 1997 x 1997
= 1996 x 1997 + ( 1997 + 1 x 3 ) + 1994 / 1997 x 1999 - 1997 x 1997
= 1996 x 1998 + 1 x 3 + 1994 / 1997 x 1999 - 1997 x 1997
= 3988008 + 3 + 1994 / 1997 x 1999 - 1997 x 1997
= 3990005 / 1997 x 1999 - 1997 x 1997
= 3990005 / ( 1999 - 1997 ) x 1997
= 3990005 / 3994
\(∘Anya\)
\(=\dfrac{\text{1997 × 1996 − 995}}{\text{1995 × 1997 + 1002 }}\)
\(=\dfrac{\text{1997 × ( 1995 + 1 ) − 995}}{\text{1995 × 1997 + 1002}}\)
\(=\dfrac{\text{1997 × 1995 + 1997 − 995}}{\text{1995 × 1997 + 1002}}\)
\(=\dfrac{\text{1997 × 1995 + 1002}}{\text{1995 × 1997 + 1002 }}=1\)