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

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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

asked Jul 26, 2018 200k views

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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

Mathematics
middle-school

AlishahNovin asked

by AlishahNovin

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

Ramesh Maharjan answered Jul 31, 2018

by Ramesh Maharjan

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