which one should i use for doing a substitution method? 6y=x+18 or 2y-x=6
Last edited by Scoobylover; Mar 5th 2007 at 05:46 PM.
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Originally Posted by Scoobylover which one should i use for doing a substitution method? 6y=x=18 or 2y-x=6 You have, 6y-x=18 Thus, x=6y-18 Substitute that into equation (2), 2y-(6y-18)=6 2y-6y+18=6 -4y=-12 y=3 Now you can find "x"
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