( x . 25 + 2008 ) . 2009 = ( 575 + 2008 ) . 2009
=> x . 25 + 2008 = 575 + 2008
=> x . 25 = 575
x = 575 : 25
x = 23
Dấu " . " là dấu nhân nha
=>x . 25 +2008 =575+2008
=>x.25=575
x=575:5
x=115
x.25+2008=575+2008
x.25=575+2008—2008
x.25=575
x=575:25
x=23