math hw...

ugh. i dont like systems of equations...help? idk how 2 solve them cuz fleharty just sed "substitue" adn idk if thats gonna wrk... :( ugh... then i hav 2 study 4 vocab...not that bad i guess...but still...i bet im gonna fail the exam 4 2mrw...ugh...stil kinda bored... wat does the ipad do anyway??? i think its not that gr8 no offense... :|