2`1/4`.(`x`-`7``1/3`)=`1,5`
`9/4`. ( `x` -`22/3`) = `3/2`
( `x` - `22/3`) =`3/2`: `9/4`
`x` - `22/3` = `2/3`
`x` = `2/3` + `22/3`
`x` = `8`
Vậy `x` = `8`
(2,8.`x`-`32`) : `2/3`=-90
(2,8 . `x` - 32 ) = `-90` . `2/3`
2,8 . `x` - 32 =-60
`2,8` . `x` = -60 + 32
`2,8` . `x` = -28
`x` = -28 : 2,8
`x` = `-10`
Vậy `x` = `-10`