x+y=-9 x-y=14 solve
stapel Super Moderator Staff member Joined Feb 4, 2004 Messages 16,583 Jul 12, 2006 #2 Where are you stuck in the solving-by-substitution process? Which equation did you solve? For which variable? What did you get when you substituted? Or are you requesting links to lessons on this topic? Thank you. Eliz.
Where are you stuck in the solving-by-substitution process? Which equation did you solve? For which variable? What did you get when you substituted? Or are you requesting links to lessons on this topic? Thank you. Eliz.