nicole565 nicole565

19-05-2017
Mathematics

contestada

A student solved s system of equations by elimination. Describe and correct the error made in the part of the solution shown.

5x+4y — x3→15x+12y=6

3x+3y — x4→12x+12y=-3

3x+0=9

x=3

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haydwolf1 haydwolf1

19-05-2017

It went wrong in the 2nd step. It doesn't equal -3 it equals positive 3

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