Bai 1.Tim x,  y biet : 

2x(3y-2)+(3y-2) = -55

Bai 2 .a) So sanh : -22/45 va -51/103

b) So sanh A = 2009^2009 +1 / 2009^2010 va B = 2009^2010-2/2009^2011-2

Bai 3 :

a)Tim so tu nhien co 3 chu so , biet rang khi chia so do cho cac so  25, 28,35thi duoc cac so du lan luot la 5,8,15

b)Tim x: (x+1)+(x+2)+(x+3)+...+(x+100)=205550

So sanh : U = \(\frac{2009^{2005}+1}{2009^{2010}+1}\)va V = \(\frac{2009^{2010}+2}{2009^{2011}+2}\)

So sanh :2009^2009+1/2009^2010+1 va 2009^2010-2/2009^2011-2

so sánh \(\frac{-22}{45}\)và\(\frac{-51}{103}\)

so sánh \(\frac{2009^{2009}+1}{2009^{2010}+1}\)và\(\frac{2009^{2010}-2}{2009^{2011}-2}\)

2. So sánhA=\(\frac{2009^{2009}+1}{2009^{2010}+1}\) VÀ B=\(\frac{2009^{2010}-2}{2009^{2011}-2}\)

so sanh: A=2009^2009+1/2009^2010+1 và B=2009^2010-2/2009^2011-2

So sanh 2 phan so 

2009×2009+2008/2009×2009+2009 va 2009×2009+2009/2009×2009+2010

So sánh:

A=\(\frac{2009^{2009}+1}{2009^{2010}+1}\)và B=\(\frac{2009^{2010}-2}{2009^{2011}-2}\)

so sánh  A=\(\frac{2009^{2009}+1}{2009^{2010}+1}\)B=\(\frac{2009^{2010}-2}{2009^{2011}-2}\)