\(7,15\div\times0,5+7,15\times9-7,15\\ =7,15\times2+7,15-7,15\\ =7,15\times\left(2+9-1\right)\\ =7,15\times10=71,5\)
`7,15 :0,5 + 7,15 xx 9 - 7,15`
`=7,15 xx 2+7,15 xx 9- 7,15 xx 1`
`=7,15 xx (2+9-1)`
`=7,15 xx 10`
`=71,5`
Ta có: \(7,15:0,5+7,15\cdot9-7,15\)
\(=7,15\cdot2+7,15\cdot9-7,15\)
\(=7,15\cdot10=71,5\)
\(7,15\div0,5+7,15\times9-7,15\)
\(=7,15\times2+7,15\times9-7,15\)
\(=7,15\times\left(2+9-1\right)\)
\(=7,15\times10\)
=71,5
7,15: 0,5 + 7,15 x 9 - 7,15
= 7,15 x 2 + 7,15 x 9 - 7,15
= 7,15 x ( 2 + 9 - 1 )
= 7,15 x 10
= 71,5
thấy đúng thì tick mik nha
Hok Tốt
@uy tín
