12 000 - ( 1500 . 2 + 1800 . 3 + 1800 . 2 : 3 )
= 12 000 - ( 3000 + 5400 + 3600 : 3 )
= 12 000 - ( 3000 + 5400 + 1200 )
= 12 000 - ( 8400 + 1200 )
= 12 000 - 9600
= 2400
12000 - ( 1500 x 2 + 1800 x 3 + 1800 x 2 : 3 ) = 2400 nha bạn!!!^^
12 000 - ( 1 500 x 2 + 1 800 x 3 + 1 800 x 2 : 3 )
= 12 000 - ( 3 000 + 5 400 + 1 200 )
= 12 000 - 9 600
= 2 400