20 x 10 + 20 x 10 + 20 x 80
= 20 ( 10 + 10 + 80 )
= 20 x 100
= 2000
tk mk nha !
20 x 10 + 20 x 10 + 20 x 80
= 20 x (10 + 10 + 80)
= 20 x 100
= 2000
ai k mik mik k lại
20 x10 + 20 x10 +20 x80
= 20 x ( 80 + 10 + 10 )
= 20 x ( 80 + 20 )
= 20 x 100
= 2000
Nho k minh nha
20 x 10 + 20 x 10 + 20 x80 = 20 x ( 10 + 10 + 80 ) = 20 x 100 = 2000
$[Thùy Dương]$
`20 xx 10 + 20 xx 10 + 20 xx 80`
`-> 20 xx (10 + 10 + 80)`
`-> 20 xx 100`
`-> 2000`