2011 x 2010 - 1/2009 x 2011 + 2010
tim x biết x+2 / 2012 + x+3 / 2011 = x+4 / 2010 + x+5 / 2009
Tìm x biết
A: ( 2011 + 1.5 × x ) × 2010 = ( 30 + 2011 ) - 2010
(2009 x 2010 + 2011 x 12 + 1998)/(2011 x 2010 - 2010 x 2009)
tim x biet
x + 4/2009 + x + 3 / 2010 = x + 2/2011 + x + 1/2012
Tìm x biết : 2011 + 2010+2009+...+x=2011
A= (1-1/2010) x (1- 2/2010) x (1- 3/2010) x.... x( 1- 2011/2010) =?
( 2009/2010 + 2010/2011 + 2011/2012 ) x ( 1/3 - 1/4 - 1/12 )
Tim x:
x . (1/2+1/3+1/4+. . .+1/2011+1/2012)
2012/1 +2011/2+2010/3+2009/4+2/2011+1/2012
=1
