200+900+900+800+1000=3800
k minh nhe
200+900+900+800+1000
=1100+900+800+1000
=2000+800+1000
=2800+1000
=3800
=3800
tk mk nha!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
\(200+900+900+800+1000\)
\(=1100+1700+1000\)
\(=3800\)
k mk nha
thank you very much
200 + 900 + 800 + 900 + 1000
= ( 200 + 800 ) + ( 900 + 900 ) + 1000
= 1000 + 1800 + 1000
= 2000 + 1800
= 3800
200 + 900 + 900 + 800 + 1000
= ( 200 + 800 ) + ( 900 + 900 ) + 1000
=1000 + 1800 + 1000
= 2000 +1800
= 3800
