60 + 50 +40 + 30 + 20
= (60+40) + (50+30+20)
= 100+100
=200
bang 200 nha ban!k va kb voi minh nhe1chuc ban hoc tot!
= 200 nha
mk tk rồi đó ! tk mk đi !
60 + 50 + 40 + 30 + 20
= ( 60 + 40 ) + ( 50 + 20 + 30 )
= 100 + 100
= 200
~~ tk mk nha ~~
Ai tk mk mk tk lại ~!~^^
kb nha ~~ n_n
= ( 50 + 30 + 20 ) + ( 60 + 40 )
= 100 + 100
= 200
:))
60+50+40+30+20
=(60+40)+(50+30+20)
=100+100
=200
60+50+40+30+20=(60+40)+(50+30+20)
=(60+40)+(50+30+20)
=100+100
=200