( 2009 - x ) : 29 + 32 = 100
( 2009 - x ) : 29 = 100 - 32
( 2009 - x ) : 29 = 68
( 2009 - x ) = 68 . 29
2009 - x = 1972
x = 2009 - 1972
x = 37
[2009 - x] : 29 =100-32
[2009-x] : 29 =68
2009-x =68x29
2009-x=1972
x=2009-1972
x=37
(2009-x):29+32=100
=>(2009-x):29=100-32
=>(2009-x):29=68
=>2009-x=68x29
=>2009-x=1972
=>x=2009-1972
=>x=37