( 90 - 10 + 5 - 5 ) : 2
= ( 80 + 5 - 5 ) : 2
= ( 80 + 0 ) : 2
= 80 : 2
= 40
(90-10+5-5):2
= (80+5-5):2
= (85-5):2
= 80:2
=40
Ủng hộ mik nhé, Kẹo bông ngọt ngào
(90-10+5-5) : 2
=( 80+5-5) : 2
=(80+0) :2
=80:2
= 40
(90 - 10 + 5 - 5) : 2
= (80 + 5 - 5) : 2
= (85 - 5) : 2
= 80 : 2
= 40