(June 19, 2014 at 4:49 am)Little lunch Wrote: 7th grade, seriously? Looks like I'm gonna have to start saving now for tutors for my kid.
Judging from that it'll be from grade 4-12.
That's if she makes it that far with half my genes. :-)
Yep.... 7th or 8th...
You start using 'x' in 7th grade... with equations and functions... maybe you start using equation systems in 8th grade or so.
Anyway, it's completely plausible that this would be one of the more difficult exercises in a 7th grade maths manual/test.
So, OP, which is it? Are you in 7th or 8th grade?