Respuesta :

Answer:

[tex]20[/tex]

Step-by-step explanation:

[tex]5x+10 - x = 90\\[/tex]

[tex]4x + 10 = 90[/tex]

[tex]4x = 80[/tex]

[tex]x = 20[/tex]

[tex]\therefore[/tex] the value of [tex]x[/tex] is [tex]20[/tex].

Hope this helps :)