1/2 x 1 ⅓ + 2/9 : 10/6=

( 1/2 x 1 1/3 ) + ( 2/9 : 10/6 )
= ( 1/2 x 4/3 ) + ( 2/9 x 6/10 )
= 4/6 + 12/90 => disederhanakan
= 2/3 + 4/30
= 20/30 + 4/30
= 24/30 => masing2 dibagi 6
= 4/5