50+30+20+50+70+80
=300
chuc bn hoc gioi!
nhae
nhaebn@@^_________________^
số đó là
( 50+50) + ( 70+30 ) + ( 80+20)
=100+ 100+100
=200+100
=300
đúng ko
=(50 +50 ) + ( 30 + 70) + (20+80)
= 100 + 100+ 100
= 300
50+30+20+50+70+80
=(50+50)+(30+70)+(20+80)
= 100 + 100 + 100
= 300
50 + 30 + 20 + 50 + 70 + 80
= (50 + 50) + (30 + 20 + 70 + 80)
= 100 + 200
= 300
tk cho mk nhé