2 câu trả lời
$\text{10 - 9 + 8 - 7 + 6 - 5 + 4 - 3 + 2 - 1 }$
$\text{= (10-9) + (8-7) + (6-5) + (4-3) + (2-1)}$
$\text{= 1+1 +1 + 1 + 1}$
$\text{= 5}$
`10-9+8-7+6-5+4-3+2-1`
`= (10-9)+(8-7)+(6-5)+(4-3)+(2-1)`
`= 1+1+1+1+1`
`= 5`
XIN HAY NHẤT Ạ
$\text{10 - 9 + 8 - 7 + 6 - 5 + 4 - 3 + 2 - 1 }$
$\text{= (10-9) + (8-7) + (6-5) + (4-3) + (2-1)}$
$\text{= 1+1 +1 + 1 + 1}$
$\text{= 5}$
`10-9+8-7+6-5+4-3+2-1`
`= (10-9)+(8-7)+(6-5)+(4-3)+(2-1)`
`= 1+1+1+1+1`
`= 5`
XIN HAY NHẤT Ạ
