Ryan owns $48 x 2/3 = $<<48*2/3=32>>32 of the $48.
While Leo owns $48 - $32 = $<<48-32=16>>16 of the $48.
Leo had $16 + $10 = $<<16+10=26>>26 after Ryan paid him $10.
But since he owed Ryan $7, then Leo has $26 - $7 = $<<26-7=19>>19.
#### 19