Question

`240-[13+(23+25.5-x)]=130`

Answer 1

240−[ 13+(23+25.5−x) ]=130

240 - [ 13 + ( 23 + 125 - x ) ] = 130 

240 - [ 13 + 148 - x ] = 130

240 - 161 - x = 130 

79  - x = 130 

         x = 130 - 79 

         x = 51

Answer 2

`240-[13 +(23+25.5-x)] = 130`

`13 +(23+25.5-x)=240 - 130`

`13 +(23+25.5-x)=110`

`23+25.5-x = 110-13`

`23+25.5-x = 97`

`25.5-x = 97-23`

`25.5-x=74`

`125-x=74`

`x=125-74`

`x=51`

Vậy `x=51`