Question

Tìm x : 4.(x - 12) + 9 = 17

Answer 1

=>4(x-12)=8

=>x-12=2

=>x=14

Answer 2

\(4\left(x-12\right)=8< =>x-12=2< =>x=14\)

Answer 3

`4.(x - 12) + 9 = 17`

`=>4.(x - 12) =17-9`

`=>4.(x - 12) = 8`

`=>x-12=8:4`

`=>x-12=2`

`=>x=2+12`

`=>x=14`

Answer 4

\(4\left(x-12\right)+9=17\) 
\(4\left(x-12\right)\)       \(=17-9\) 
\(4\left(x-12\right)\)       \(=8\) 
    \(x-12\)        \(=8 : 4\) 
    \(x-12\)        \(=2\) 
    \(x\)                \(=2+12\) 
    \(x\)                \(=14\)