Quoting Post Archived Topic: It will not be bumped to the top of the forum. Topic ugh math HELP please Membername   Not a member? Sign Up Free (takes 20 seconds) Password   Forgotten your password? Post Font: Verdana Arial Black Georgia Comic Sans Impact   Size: Tiny Normal Big Huge   Color: Default Dark Red Red Orange Brown Green Olive Cyan Blue Dark Blue Indigo Black [ Check Spelling ] [ Post Preview ] [ LiveTags ] Quote: from [m]WhoElse[/m] at 3:39 pm on Jan. 6, 2009[quote]solve everything for z and then plug it in[/quote] FAQ Keyword Search: Post Options Favorites Manager Notify me of new replies to this topic by email Notify me of new replies to this topic by private message Original Post ashleexoxo Posted at 3:37 pm on Jan. 6, 2009 you can use subsitution or elimination 6x + y - 4z = -8    y/4 - z/6 =0 2x        - z   = -2 yea i think it come out to be a fraction but im not sure need help with the steps to do it

Replies buffered Posted at 9:48 pm on Jan. 6, 2009 from ur 3rd eqn, make z the subject. z = 2x + 2. sub this into eqn 1 and 2 will give you 2 new equations with only x and y in it. solve x and y. once you found x and y, z is there for the taking. nullPointerException Posted at 7:32 pm on Jan. 6, 2009 Google matrices and crammer's rule Drinkingjam Posted at 3:44 pm on Jan. 6, 2009 E=Mc2*Chuck(NorrisX666) Kilanna Posted at 3:43 pm on Jan. 6, 2009 What the hell kind of math is that?!?!? WhoElse Posted at 3:39 pm on Jan. 6, 2009 solve everything for z and then plug it in A BitterSweet Life Posted at 3:38 pm on Jan. 6, 2009 what are you solving for exactly? All 6 previous replies displayed.