which one should i use for doing a substitution method?

6y=x+18

or

2y-x=6

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- March 5th 2007, 03:55 PMScoobylover[SOLVED] solving system
which one should i use for doing a substitution method?

6y=x+18

or

2y-x=6 - March 5th 2007, 04:43 PMThePerfectHacker