e2smorrelyail e2smorrelyail

12-12-2016
Mathematics

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How do I solve 3x-7y=63 and 4x+3y=-27by addition?

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howudoing howudoing

14-12-2016

multiply eqn 1 by 3 and eqn 2 by 7 then adding them will cancel Y. and X can be found.

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