Question

390-(x-7)=2⁴:4

Answer 1

`=> 397 -x=4`

`=> x=393`

Answer 2

`390-(x-7)=2^4 :4`

`=>390-(x-7)=16 : 4`

`=>390-(x-7)=4`

`=>x-7=390-4`

`=>x-7= 386`

`=>x=386 +7`

`=>x=393`

Answer 3

`390 - ( x - 7) = 2^4 : 4`

`=> 390 - (x - 7) = 2^4 : 2^2`

`=> 390 - (x - 7) = 2^2`

`=> 390 - (x-7)   = 4`

`=>           x-7     = 390 - 4`

`=>           x-7    = 386`

`=>           x        = 386 + 7`

`=>            x       = 393`

Answer 4

=> 390-x+7=16:4

=>390-x+7=4

=>390-x+7-4=0

=>(390+7-4)-x=0

=>393-x=0

=>x=-393