2021*3+2021*4+2021+2021+2021 tính bằng cách thuận tiện nhất
2 câu trả lời
2021 x 3 + 2021 x 4 + 2021 + 2021 + 2021
= 2021 x 3 + 2021 x 4 + 2021 x 1 + 2021 x 1 + 2021 x 1
= 2021 x ( 3 + 4 + 1 + 1 + 1 )
= 2021 x 10
= 20210
`2021` × `3` + `2021` × `4` + `2021` + `2021` + `2021`
= `2021` × `3` + `2021` × `4` + `2021` × `3`
= `2021` × ( `3` + `4` + `3` )
= `2021` × `10`
= `20210`
#TNT