( 1+2/9)( 1- 1/4)x =(360-x+ 1/4x)
1 1/9×3/4x=360-3/4x
1 1/ 12x = 360-3/4x
1 1/ 12x+3/4x = 360
5/3x=360
x = 2 16 360-2 16 = 144
The first shelf has 2 16 books.
The second shelf has 144 original books.