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View Full Version : Solve by substitution

Carolmequietly
Sep 2, 2013, 07:44 AM
-9x+y=71
6x+12y=54
Curlyben
Sep 2, 2013, 07:50 AM
What do YOU think ?
While we're happy to HELP we won't do all the work for you.
Show us what you have done and where you are having problems..