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dinejohns
Nov 21, 2011, 09:11 AM
using substitution method
5x y=13
-x 5y=0

Aurora2000
Nov 21, 2011, 10:09 AM
The second equation is -x+5y=0 , or equivalently x=5y . Then the first
becomes 5(5y)+y=13 and solve in y.