4.75-5/9+5.24-4/9
= （4.75+5.24）-（5/9+4/9)
=9.99-1
=8.99
(5/12+4/9+1/3)/1/36
=(5/12+4/9+1/3)×36
=5/12×36+4/9×36+1/3×36
=15+16+12
=43