Respuesta :

✽ - - - - - - - - - - - - - - - ~Hello There!~ - - - - - - - - - - - - - - - ✽

➷  [tex]x + 3 = 21[/tex]

[tex]x = 21 - 3[/tex]

[tex]x = 18[/tex]

➶ Hope This Helps You!

➶ Good Luck (:

➶ Have A Great Day ^-^

↬ May ♡