LINEAR EQUATIONS METHODS HELP.

DESPERATE HELP NEEDED!

Now normally I'm very good at maths, everything except....linear equations. it feels weird but i suck at it. any help pls any advice pls. i just failed my test for it and have to redeem any adivce on how to study/pass. FOR ANYONE WHO SAYS "ask ur teacher for help" no my teacher is cranky and genuinely gets mad if u ask for help he tells u to drop the class and humiliates u infornt of the class..