I have ADHD, mathematics have always been a difficult subject throughout my academic endeavors. Because of my economical status I quit studying and focused on working instead, now I'm 19 years old and I'm contemplating on taking a GED (I'm not northamerican, so it's the equivalent) since I'm not in a position to continue high school. The exam is coming in a month, if I wanted to focus entirely on studying I need to quit my job temporarily. Would it be possible for me to learn the basics within a month's time? Thank you.