Respuesta :

naǫ
x - the number
you double the number - 2x
you subtract the result from five - 5-2x
you get negative one - 5-2x=-1

[tex]5-2x=-1 \\ -2x=-1-5 \\ -2x=-6 \\ x=\frac{-6}{-2} \\ x=3[/tex]

The number is 3.